Lana would pick a non-striped marble about 294 times.
The probability of picking a marble that is not striped is 100% - 8% = 92% = 0.92. This means that for each pick, the probability of getting a non-striped marble is 0.92.
If Lana picks a marble and replaces it 320 times, the number of times she would pick a non-striped marble can be predicted by multiplying the probability of getting a non-striped marble by the number of picks.
So, the number of times she would pick a non-striped marble is:
0.92 x 320 = 294.4
Rounding to the nearest whole number = 294.
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A company randomly assigns employees four-digit security codes using the numbers
1 through 4 to activate their e-mail accounts.
Any of the digits can be repeated. Is it likely that more than 3 of the 1,280 employees will be assigned the code 4113? PLEASE I WILL GIVE U BRAINLIEST!!
Answer:
1email is given by its boss and another email is given by its assistent
Calculating the relative frequencies from the data given in the table. Choose all that correctly describe an association between favorite subject and grade
From the given data, the statement "A higher percentage of 8th graders than 7th graders prefer Math/Science" is correct. So, correct option is C.
To calculate the relative frequencies, we need to divide the frequency of each category by the total number of responses.
For 7th grade:
Relative frequency of English: 38/116 = 0.3276
Relative frequency of History: 36/116 = 0.3103
Relative frequency of Math/Science: 28/116 = 0.2414
Relative frequency of Other: 14/116 = 0.1207
For 8th grade:
Relative frequency of English: 47/182 = 0.2582
Relative frequency of History: 45/182 = 0.2473
Relative frequency of Math/Science: 72/182 = 0.3956
Relative frequency of Other: 18/182 = 0.0989
From the data, we can see that a higher percentage of 8th graders prefer Math/Science than 7th graders. Therefore, the statement "A higher percentage of 8th graders than 7th graders prefer Math/Science" correctly describes the association between favorite subject and grade.
The statements "A higher percentage of 8th graders than 7th graders prefer History" and "A higher percentage of 7th graders than 8th graders prefer English" are incorrect as the relative frequencies for these subjects are similar in both grades.
Overall, we can conclude that the choice of favorite subject is not strongly associated with the grade level of the students.
So, correct option is C.
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Complete question is:
Calculating the relative frequencies from the data given in the table. Choose all that correctly describe an association between favorite subject and grade.
A) A higher percentage of 8th graders than 7th graders prefer History.
B) A higher percentage of 7th graders than 8th graders prefer English.
C) A higher percentage of 8th graders than 7th graders prefer Math/Science.
Qiang wants to style a 3ft x 3ft entryway. estimate to determine which style of tile will be the least expensive for this project. EXPLAIN.
The style that will be least expensive for the project, based on the product of the fractions representing the dimensions is the Style D that will yield a total cost of $25.92
What are fractions?A fraction is a representation of a part of a whole. It is a quantity which forms part of a whole number.
The area Qiang wants to tile = 3 ft × 3 ft
The price list and area of each tile, based on the product of the fractions of the tile dimensions are;
A; (5/6) × (1 1/12) = 65/72 cost 3.25
B; (5/6) × (2 1/12) = 125/72 cost 6.20
C; (5/6) × (5/6) = 5/16 cost 2.75
D; (5/12) × (3/4) = 5/16 cost 0.90
E; (5/12) × (5/12) = 25/144 cost 0.65
The areas of the tiles are;
The number of tiles required, are;
Cost of tiles style A = 9/(65/72) × 3.25 = 32.4
Cost of tiles style B = 9/(125/72) × 6.20 = 32.14
Cost of tiles style C = 9/(5/16) × 2.75 = 79.2
Cost of tiles style D = 9/(5/16) × 0.90 = 25.92
Cost of tiles style E = 9/(25/144) × 0.65 = 33.696
The least expensive style for the project is style D
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The seventh- and eighth-grade classes surveyed 180 of their classmates to help decide which of three options is best to raise money for school activities. Some results of the survey are given here:
66 participants preferred having a car wash.
50 participants preferred having a bake sale.
64 participants preferred having a talent show.
98 participants were seventh graders.
16 seventh-grade participants preferred having a talent show.
15 eighth-grade participants preferred having a bake sale.
a. Complete the two-way frequency table that summarizes the data on grade level and options to raise money.
Car Wash Bake Sale Talent Show Total
Seventh Graders
Eighth Graders
Total
b. Calculate the row relative frequencies. Round to the nearest thousandth.
Car Wash Bake Sale Talent Show
Seventh Graders
Eighth Graders
Question 2
c. Is there evidence of an association between grade level and preferred option to raise money?
Explain your answer
c. Yes, there is evidence of an association between grade level and preferred option to raise money.
How is the association between grade level and the preferred option to raise money determined?a. The completed two-way frequency table summarizing the data on grade level and options to raise money is as follows:
Car Wash | Bake Sale | Talent Show | Total
Seventh Graders[tex]| 66 | 15 | 16 | 98[/tex]
Eighth Graders [tex]| - | 50 | - | 50[/tex]
Total [tex]| 66 | 65 | 16 | 148[/tex]
Note: The "-" indicates that no data is available for those specific combinations.
b. To calculate the row relative frequencies, we divide each cell value by the corresponding row total and round to the nearest thousandth:
Car Wash | Bake Sale | Talent Show
Seventh Graders [tex]| 0.673 | 0.153 | 0.163[/tex]
Eighth Graders [tex]| - | 1.000 | -[/tex]
Total [tex]| 0.446 | 0.439 | 0.115[/tex]
c. To determine if there is evidence of an association between grade level and preferred option to raise money, we can observe the row relative frequencies. If the relative frequencies differ substantially between the rows, it suggests an association. In this case, since the row relative frequencies for each option vary between the seventh and eighth graders, there is evidence of an association between grade level and the preferred option to raise money.
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A garden hose can normally fill a child's inflatable pool in 30 minutes.
The pool has a small hole in it, and water is secretly leaking out. This leak could empty the
pool in two hours (120 minutes).
How long would it take, from start to finish, until the pool is full of water?
2a) Clearly write out the equation you would use to answer the question.
2b) Answer the question. How long would it take? Please write your answer as a
complete sentence with appropriate units.
2a) The equation used to answer the question is (1/Time to fill the pool) = (1/Time taken by hose) - (1/Time taken by leak).
2b) It would take 40 minutes to fill the pool with water when there is a small hole causing a leak.
To solve this, we can use the concept of rates of work.
2a) The equation we would use to answer the question is:
(1/Time to fill the pool) = (1/Time taken by hose) - (1/Time taken by leak)
2b) Let's plug in the values given in the question:
(1/Time to fill the pool) = (1/30 minutes) - (1/120 minutes)
To find the time to fill the pool, we first need to find a common denominator for the fractions. The common denominator is 120, so we can rewrite the fractions as:
(1/Time to fill the pool) = (4/120) - (1/120)
Now, add the fractions on the right side:
(1/Time to fill the pool) = (3/120)
Next, take the reciprocal of both sides to solve for the time to fill the pool:
Time to fill the pool = 120/3
Time to fill the pool = 40 minutes
So, it would take 40 minutes to fill the pool.
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1. at american high school, 35% of the students are freshmen. one-fourth of the students
are sophomores. nine-fortieths of the students are juniors. and there are 308 seniors.
how many students are freshmen?
There are 616 freshmen in the school according to fraction, percentage and number of different types of student.
Let us represent the total number of students in school as x. So, the equation that will form is -
Number of freshmen + sophomores + juniors + seniors = total number of students
35x/100 + x/4 + 9x/40 + 308 = x
Adding the values and converting into decimal.
0.825x + 308 = x
Rewrite the equation
308 = (1 - 0.825)x
308 = 0.175x
x = 308/0.175
Divide the values
x = 1760
So, number of freshmen = 0.35 × 1760
Multiply the numbers
Number of freshmen = 616
Thus, there are 616 freshmen.
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HELP
Fran has been assigned the task of determining the
probability of drawing 3 spades from a standard deck of
52 cards. Recall there are 4 suits (diamonds, hearts, spades,
and clubs) of 13 cards each, in a deck. Each card is drawn
one at a time and held until the remaining cards of the hand
are drawn.
How many ways are there to draw the first card?
o 13
O 52
04
01
52
How many ways to draw?There are 52 ways to draw the first card from a standard deck of 52 cards. Each card in the deck is distinct, so there are 52 different possibilities for the first card.
The deck consists of 4 suits (diamonds, hearts, spades, and clubs) with 13 cards in each suit. Therefore, there are 13 cards of the spades suit. Since each card is equally likely to be drawn, the probability of drawing a spade as the first card is 13/52 or 1/4.
This is because out of the 52 possible cards, 13 of them are spades. So, regardless of the specific spade that is drawn, there are 13 ways to draw a spade as the first card.
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A person uses a screwdriver to turn a screw and insert it into a piece of wood. The person applies a force of 20 newtons to the screwdriver and turns the handle of the screwdriver a total distance of 0. 5 meter. How would these numbers be different with a hammer and a nail instead of a screwdriver and a screw
Using a hammer and nail instead of a screwdriver and screw would change the type of force applied (linear versus rotational) and the distance covered (shorter linear distance versus longer turning distance). These differences can affect the efficiency, holding power, and ease of use when connecting materials.
When using a screwdriver and screw, the applied force of 20 newtons and turning distance of 0.5 meters involve rotational motion to insert the screw into the wood. The screwdriver acts as a lever, and the screw's threads translate the rotational force into linear motion, increasing the grip strength and holding power.
In contrast, when using a hammer and nail, the force applied would be different because the action is linear instead of rotational. The hammer delivers a series of high-impact, short-duration forces to drive the nail into the wood. The amount of force required would depend on factors like the size of the nail, the hardness of the wood, and the user's strength.
Additionally, the distance covered during hammering would be different. Unlike the screwdriver's 0.5-meter turning distance, the hammer's motion covers a shorter linear distance as it strikes the nail head repeatedly. The total distance depends on the number of hammer strikes and the length of the nail.
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Complete Question:
A person uses a screwdriver to turn a screw and insert it into a piece of wood. The person applies a force of 20 newtons to the screwdriver and turns the handle of the screwdriver a total distance of 0.5 meter. How would these numbers be different if the person inserted a nail with a hammer instead of the screw with the screwdriver?
A. The force applied would be greater, but the distance would be shorter.
B. The force applied would be less, but the distance would be greater.
C. The force applied would be the same, but the distance would be shorter.
D. The force applied would be the same, but the distance would be greater.
Question 15
Find the area of the quadrilateral with the vertices A (-8, 6), B(-5, 8), C (-2, 6), and D (-5,0).
units²
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Get a Hint
The area of the quadrilateral can be found by dividing it into two triangles and finding the sum of their areas. The line connecting points B and D divides the quadrilateral into two triangles ABD and BCD. The area of triangle ABD is 1/2 * base * height = 1/2 * 6 * 6 = 18 square units. The area of triangle BCD is 1/2 * base * height = 1/2 * 3 * 8 = 12 square units. Therefore, the area of the quadrilateral is 18 + 12 = 30 square units.
Suppose we have n+ positive training examples and n− negative training examples. Let C+ be the center of the positive examples and C− be the center of the negative examples, i.e., C+ = 1 n+ P i: yi=+1 xi and C− = 1 n− P i: yi=−1 xi . Consider a simple classifier called CLOSE that classifies a test example x by assigning it to the class whose center is closest. • Show that the decision boundary of the CLOSE classifier is a linear hyperplane of the form sign(w · x + b). Compute the values of w and b in terms of C+ and C−. • Recall that the weight vector can be written as a linear combination of all the training examples: w = Pn++n− i=1 αi · yi · xi . Compute the dual weights (α’s). How many of the training examples are support vectors?
To show that the decision boundary of the CLOSE classifier is a linear hyperplane, we need to show that it can be represented as sign(w · x + b), where w is the weight vector, b is the bias term, and sign is the sign function that outputs +1 or -1 depending on whether its argument is positive or negative.
Let x be a test example, and let d+ = ||x - C+|| be the distance from x to the center of the positive examples, and d- = ||x - C-|| be the distance from x to the center of the negative examples. The CLOSE classifier assigns x to the positive class if d+ < d-, and to the negative class otherwise. Equivalently, it assigns x to the positive class if
||x - C+[tex]||^2[/tex] - ||x - C-[tex]||^2[/tex] < 0.
Expanding the squares and simplifying, we get
(x · x - 2C+ · x + C+ · C+) - (x · x - 2C- · x + C- · C-) < 0,
which is equivalent to
2(w · x) + (C+ · C+ - C- · C-) - 2(w · (C+ - C-)) < 0,
where w = C+ - C- is the vector pointing from the center of the negative examples to the center of the positive examples. Rearranging, we get
w · x + b < 0,
where b = (C- · C-) - (C+ · C+) is a constant.
Thus, the decision boundary of the CLOSE classifier is a hyperplane defined by the equation w · x + b = 0, and the classifier assigns a test example x to the positive class if w · x + b > 0, and to the negative class otherwise.
To compute the values of w and b in terms of C+ and C-, we can use the definition of w and b above. We have
w = C+ - C-,
b = (C- · C-) - (C+ · C+).
To compute the dual weights α's, we need to solve the dual optimization problem for the support vector machine (SVM) with a linear kernel:
minimize 1/2 ||w||^2 subject to yi(w · xi + b) >= 1 for all i,
where yi is the class label of the i-th training example, and xi is its feature vector. The dual problem is
maximize Σi αi - 1/2 Σi Σj αi αj yi yj xi · xj subject to Σi αi yi = 0 and αi >= 0 for all i,
where αi is the dual weight corresponding to the i-th training example. The number of support vectors is the number of training examples with nonzero dual weights.
In our case, the training examples are the positive and negative centers C+ and C-, so we have n+ + n- = 2 training examples. The feature vectors are simply the centers themselves, so xi = C+ for i = 1 and xi = C- for i = 2. The class labels are yi = +1 for i = 1 (positive example) and yi = -1 for i = 2 (negative example). Plugging these into the dual problem, we get
maximize α1 - α2 - 1/2 α[tex]1^2[/tex] d(C+, C+) - 2α1α2 d(C+, C-) - 1/2 α[tex]2^2[/tex] d(C-, C-) subject to α1 - α2 = 0 and α1,
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Solve for x trigonometry
Answer:
x ≈ 36.87°
Step-by-step explanation:
using the sine ratio in the right triangle
sin x = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{3}{5}[/tex] , then
x = [tex]sin^{-1}[/tex] ( [tex]\frac{3}{5}[/tex] ) ≈ 36.87° ( to the nearest hundredth )
Given the system of inequalities: 4x – 5y < 1 one-halfy – x < 3 which shows the given inequalities in slope-intercept form? y < four-fifthsx – one-fifth y < 2x 6 y > four-fifthsx – one-fifths y < 2x 6 y > negative four-fifthsx one-fifth y > 2x 6
y < four-fifthsx - one-fifth
y < 2x + 6
How to express the given inequalities in slope-intercept form?The given system of inequalities can be represented in slope-intercept form as follows:
y < (4/5)x - 1/5
y < 2x + 6
To convert the given inequalities into slope-intercept form, we rearrange each equation to solve for y
In the first inequality, we add 5y to both sides and then divide by 4 to isolate y. This gives us:
4x - 5y < 1
-5y < -4x + 1
y > (4/5)x - 1/5
In the second inequality, we add x to both sides and then divide by -1/2 to isolate y. This gives us:
1/2y - x < 3
1/2y < x + 3
y > 2x + 6
Therefore, the given inequalities in slope-intercept form are:
y < (4/5)x - 1/5
y > 2x + 6
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Alexander stacked unit cubes to build the rectangular prism below. Use the rectangular prism to answer
Alexander stacked 16 unit cubes required to build the rectangular prism.
What is a prism?A three-dimensional solid object called a prism has two identical ends. It consists of equal cross-sections, flat faces, and identical bases. Without bases, the prism's faces are parallelograms or rectangles.
Here we need to find the number of cubes required to build the rectangular prism.
Here first we need to find how many cubes stack in the base layer
Number of unit cubes in the base layer = Number of cubes along the length * Number of cubes along the width
The number of unit cubes in the base layer = 2 * 4 = 8 cubes.
Total number of unit cubes in prism =Number of unit cubes in the base layer *Number of layers = 8 * 2 = 16 unit cubes
So, there are 16 unit cubes are required to build the rectangular prism.
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Complete question :
Alexander stacked unit cubes to build the rectangular prism below. Use the rectangular prism to answer the question.
How many cubes are required to build the rectangular prism?
A survey found that the relationship between the years of education a person has and that person's yearly income in his or her first job after completing schooling can be modeled by the equation y - 1200x
7000, where x is the number of years of education and y is the yearly income. According to the model, how much does 1 year of education add to a person's yearly incomo?
А $1200
B
$5800
$7000
D
$8200
Answer:
The equation provided is y = 1200x + 7000, where y is the yearly income and x is the number of years of education.
To determine how much 1 year of education adds to a person's yearly income, we need to find the change in y when x increases by 1.
Let's plug in x and x+1 into the equation to find the corresponding yearly incomes:
When x = 1, y = 1200(1) + 7000 = $8200
When x = 2, y = 1200(2) + 7000 = $9400
The difference between these two yearly incomes is:
9400 - 8200 = $1200
Therefore, 1 year of education adds $1200 to a person's yearly income according to the model.
The answer is (A) $1200.
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Choose an adult age 18 or over in the united states at random and ask, "how many cups of coffee do you drink on average per daycall the response x for short. based on a large sample survey, a probability model for the answer you will get is given in the table. number 2 3 4 or more probability 0.360.190.08 0,11. what is p(x < 4) ? give your answer to two decimal places.
To find the probability P(X < 4) for the given probability model, where X represents the number of cups of coffee an adult aged 18 or over drinks on average per day in the United States. The probabilities for each number of cups are given in the table:
- 2 cups: 0.36
- 3 cups: 0.19
- 4 or more cups: 0.11
To find P(X < 4), we need to sum the probabilities of X being 2 or 3 cups, as those are the only values less than 4:
P(X < 4) = P(X = 2) + P(X = 3)
P(X < 4) = 0.36 + 0.19
Now, we just need to add these probabilities together:
P(X < 4) = 0.55
So, the probability that a randomly chosen adult drinks fewer than 4 cups of coffee per day is 0.55 or 55% when expressed as a percentage.
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sum of 3 consecutive even numbers is 18
Answer:
Step-by-step explanation:
5 6 7
Aadya has 143 stamps; she gives away 11 stamps and divides the remaining equally into groups.
Sumit has 220 stamps; he gives away 11 stamps and divides the remaining equally into groups.
They end up with the same number of groups.
(a) What is the number of groups?
(b)what is the No. of stamps in each of their groups
Answer:
a) The number of groups are 11.
b) For Aadya, there are 12 stamps in each group. For Sumit, there are 19 stamps per group.
Step-by-step explanation:
Aadya: 143 - 11 = 132 stamps.
Sumit: 220 - 11 = 209 stamps.
Greatest Common Factor of 132 and 209 = 11 group for both
Aadya: Let a = # of stamps in each group.; 11a = 132; a = 12 stamps per group
Sumit: Let s = # of stamps in each group.; 11s = 209; s = 19 stamps per group.
Help me on #12 A&C, #13 a,b,&c plsss preferably step by step
The solution to the problems using trigonometric ratios are:
12a) x = 16.09
12c) x = 7 and y = 7
13a) Time it takes to reach the ground is: 8 seconds
13b) Highest point reached is: 80 ft
How to use trigonometric ratios?12a) Using the law of sines, we can say that:
x/sin 90 = 9/sin 34
x = (9 * sin 90)/sin 34
x = 16.09
12c) Using the law of sines, we can say that:
x/sin 45 = 7√2/sin 90
x = (7√2 * 1/√2)/1
x = 7
Similarly, because it is an isosceles triangle, y = 7
13a) The equation of the height above the ground is :
h = 40t - 5t²
where:
h is height
t is time in seconds
Thus:
Time it takes to reach the ground is at h = 0.
40t - 5t² = 0
5t² = 40t
5t = 40
t = 8 seconds
b) Highest point reached:
h'(t) = 40 - 10t
h'(t) = 0
40 - 10t = 0
t = 4 seconds
Thus:
h_max = 40(4) - 5(4)²
h_max = 80 ft
c) Time at which ball was 35ft off ground is:
35 = 40t - 5t²
5t² - 40t + 35 = 0
Using quadratic equation calculator gives us:
t = 1 and 7 seconds
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The screen of a 32-inch high definition television has a diagonal length of 31. 5 inches. If the TV screen is 27. 5 inches wide, find the height of screen to the nearest tenth of an inch.
The height of the TV screen is?
Using the Pythagorean theorem we get , the height of the TV screen is approximately 15.4 inches to the nearest tenth of an inch.
The screen of a 32-inch high definition television has a diagonal length of 31.5 inches. If the TV screen is 27.5 inches wide, you need to find the height of the screen to the nearest tenth of an inch. To do this, you can use the Pythagorean theorem, which states that the square of the length of the hypotenuse (diagonal) of a right triangle is equal to the sum of the squares of the other two sides (width and height).
1. Let the height of the TV screen be h inches.
2. According to the Pythagorean theorem, (width)^2 + (height)^2 = (diagonal)^2.
3. Substitute the given values: (27.5)^2 + (h)^2 = (31.5)^2.
4. Calculate the squares: 756.25 + h^2 = 992.25.
5. Subtract 756.25 from both sides: h^2 = 236.
6. Find the square root of 236: h ≈ 15.4 inches.
The height of the TV screen is approximately 15.4 inches to the nearest tenth of an inch.
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Given lines
�
,
�
,
l,m,and
�
n are parallel and cut by two transversal lines, find the value of
�
x. Round your answer to the nearest tenth if necessary.
Answer:
x=8.31
Step-by-step explanation:
We can use the Proportional Segments Theorem
9/26=x/24
26x=216
x=216/26=8.31
someone PLSS helpi don’t know
The following are correct about the triangle;
1. angle C is 60°
2. angle B is 60°
3. The length of segment DB is 3
4. The length of side x is 3√3
What is an equilateral triangle?An equilateral triangle is a type of triangle in which all it's sides and angles are equal.
Since all the angles of an equilateral triangle are equal, then,
x+x+x = 180
3x = 180
x = 180/3 = 60°
therefore each angle is 60°
angle C and angle B are 60°
Using Pythagorean theorem
x² = 6²- 3²
x² = 36-9
x² = 27
x = √27
x = √9×3
x = 3√3
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A die is rolled three times and a curious pattern emerges. On the first roll, the number is greater than 3. On the second roll, the under is greater than 4, and on the third roll, the number is greater than 5. If all three rolls are independent, what is the probability that this occurs?
Therefore, the probability of the curious pattern occurring is 1/36.
What is probability?Probability theory is an important branch of mathematics that is used to model and analyze random phenomena, such as the outcomes of games of chance, the behavior of particles in physics, or the performance of complex systems in engineering. It has many practical applications in fields such as statistics, finance, economics, and computer science.
Here,
The probability of rolling a number greater than 3 on a fair die is 3/6 = 1/2, since there are three numbers (4, 5, 6) that satisfy this condition out of the six possible outcomes.
Similarly, the probability of rolling a number greater than 4 on a fair die is 2/6 = 1/3, and the probability of rolling a number greater than 5 is 1/6.
Since each roll is independent, we can multiply these probabilities together to get the probability that all three conditions are satisfied:
P = (1/2) × (1/3) × (1/6)
= 1/36
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Mai created a scale model of a shoe store her company plans to build. the ratio of the model's dimensions to the dimensions of the actual shoe store to
be built is 1:20. if the volume of the model was 35ft 3, what is the volume of the actual shoe store that mai's company plans to build?
The volume of the actual shoe store that Mai's company plans to build is 280,000 ft³.
Based on the given information, Mai created a scale model with a ratio of 1:20. If the volume of the model is 35 ft³, we can find the volume of the actual shoe store by using the ratio.
Since the ratio of the dimensions is 1:20, the ratio of the volumes will be (1:20)³, which is 1:8000. Therefore, to find the volume of the actual shoe store, we can multiply the volume of the model by 8000:
Volume of the actual shoe store = 35 ft³ × 8000 = 280,000 ft³
So, the volume of the actual shoe store that Mai's company plans to build is 280,000 ft³.
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Suppose that f(x) = g(h(x)). In each part, based on one of the functions provided, find a formula for the other formula such that their composition yields f(x) = g(h(x)).
Now let's check if f(x) = g(h(x)):
gh(x)) = g(x + 1) = (x + 1)² + 1 = x² + 2x + 1 + 1 - 1 = x² + 2x + 1
The formulas for g(x) and h(x), which are g(x) = x² + 1 and h(x) = x + 1, such that their composition yields:
f(x) = g(h(x)) = x² + 2x + 1.
In both cases, we use the composition of functions f(x) = g(h(x)) to relate the functions g(x), h(x), and their inverses. These formulas allow us to find the other function given one of the functions in the composition.
Suppose we have the function f(x) = g(h(x)). Here, we have three functions: f(x), g(x), and h(x). We're given one of these functions and asked to find the formulas for the other two functions so that their composition results in f(x).
To find a formula for one of the functions in the composition f(x) = g(h(x)), we can substitute the other function into it and simplify.
(1) If we want to find a formula for g(x) given f(x) = g(h(x)), we can substitute h(x) for x in g(x), which gives us g(h(x)). This means that g(x) = f(h^{-1}(x)), where h^{-1}(x) is the inverse function of h(x).
(2) If we want to find a formula for h(x) given f(x) = g(h(x)), we can substitute g(x) for f(x) and solve for h(x). This gives us h(x) = g^{-1}(f(x)), where g^{-1}(x) is the inverse function of g(x).
Given: f(x) = x² + 2x + 1
We need to find the formulas for g(x) and h(x) such that f(x) = g(h(x)).
One possible choice for g(x) could be g(x) = x² + 1. Now we need to find the function h(x) such that when we compose g(h(x)), it results in f(x) = x² + 2x + 1.
To do this, we can see that g(x) has x² + 1, and f(x) has x² + 2x + 1. We need to add a term '2x' in the composition. Therefore, we can choose h(x) = x + 1.
Now, let's check if f(x) = g(h(x)):
g(h(x)) = g(x + 1) = (x + 1)² + 1 = x² + 2x + 1 + 1 - 1 = x² + 2x + 1
Thus, we have successfully found the formulas for g(x) and h(x), which are g(x) = x² + 1 and h(x) = x + 1, such that their composition yields f(x) = g(h(x)) = x² + 2x + 1.
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If there were eight equal pieces and seven of them were gone how many would there be in angle measurement
If there were eight equal pieces and seven of them were gone, there would be 45 degrees in angle measurement.
When the circle is divided into eight equal pieces, each piece has an angle of 360°/8 = 45°. If seven of these pieces are gone, only one piece is remaining, which is equivalent to 45 degrees in angle measurement. Therefore, the answer is 45 degrees.
Alternatively, we can use the formula for finding the angle of a sector of a circle. The formula is given as Angle = (θ/360) x 2πr, where θ is the central angle in degrees, and r is the radius of the circle. In this case, the radius of the circle is not given, but we know that there were eight equal pieces initially.
Therefore, the central angle for one piece is 360°/8 = 45°. So, the angle of the remaining piece is (45/360) x 2πr = (1/8) x 2πr = π/4 radians or 45 degrees.
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Miss kito’s grandfather passed away and she attended the reading of the will. the estate was valued at $4,567,890. it was decided that 3/5 of the estate value would be given to various charities. of the remaining amount, 1/4 would be used to create a scholarship for mathematics majors at fishtopia university and the rest would be divided evenly among his three grandchildren, of which miss kito was one.
Miss Kito will receive $456,789 from her grandfather's estate.
Let's break down the information given in the problem step by step.
The estate was valued at $4,567,890.
3/5 of the estate value would be given to various charities.
To find out how much money is left after 3/5 is given to charities, we can subtract 3/5 from 1:
1 - 3/5 = 2/5
So, 2/5 of the estate value is left. We can find out how much that is by multiplying:
2/5 x $4,567,890 = $1,827,156
Therefore, $1,827,156 is left after 3/5 of the estate value is given to charities.
1/4 of the remaining amount would be used to create a scholarship for mathematics majors at Fishtopia University.
To find out how much money will be used to create the scholarship, we can multiply:
1/4 x $1,827,156 = $456,789
Therefore, $456,789 will be used to create the scholarship.
The rest would be divided evenly among his three grandchildren, of which Miss Kito was one.
To find out how much money Miss Kito will receive, we can subtract $456,789 from $1,827,156:
$1,827,156 - $456,789 = $1,370,367
Finally, we can divide $1,370,367 by 3 to find out how much money each grandchild will receive:
$1,370,367 ÷ 3 = $456,789
Therefore, Miss Kito will receive $456,789 from her grandfather's estate.
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You are working as a financial planner. a couple has asked you to put together an investment plan for the education of their daughter. she is a bright seven-year-old (her birthday is today), and everyone hopes she will go to university after high school in 10 years, on her 17th birthday. you estimate that today the cost of a year of university is $17,500, including the cost of tuition, books, accommodation, food, and clothing. you forecast that the annual inflation rate will be 5. 6%. you may assume that these costs are incurred at the start of each university year. a typical university program lasts 4 years. the effective annual interest rate is 6. 75% and is nominal. a. suppose the couple invests money on her birthday, starting today and ending one year before she starts university. how much must they invest each year to have money to send their daughter to university? (do not round intermediate calculations. round your answer to 2 decimal places. )
investment per year $
b. if the couple waits 1 year, until their daughter’s 8th birthday, how much more do they need to invest annually? (do not round intermediate calculations. round your answer to 2 decimal places. )
additional yearly payments $
The couple needs to invest $9,060.52 per year to have enough money to send their daughter to university. The couple needs to invest an additional $1,322.18 per year if they wait one year to start saving for their daughter's university education.
a. The amount of money the couple needs to invest each year can be calculated using the present value of annuity formula. The future value of the university cost after 10 years can be calculated by compounding the current cost for 10 years at an annual inflation rate of 5.6%.
Then, the present value of this future cost can be found by discounting it back to the present using the effective annual interest rate of 6.75%. Finally, this present value can be divided by the present value of an annuity factor for 9 years (one year before the university starts) at an effective annual interest rate of 6.75%.
Using these calculations, the couple needs to invest $9,060.52 per year to have enough money to send their daughter to university.
b. If the couple waits for one year, they will have nine years to save for their daughter's university education. This means they will have one less year to invest, so they will need to invest more each year to have enough money for their daughter's university education.
The additional amount they need to invest can be found by subtracting the present value of an annuity of $9,060.52 for 9 years from the present value of an annuity of $9,060.52 for 8 years.
Using these calculations, the couple needs to invest an additional $1,322.18 per year if they wait one year to start saving for their daughter's university education.
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Please hurry I need it ASAP
Answer:
[tex]3\sqrt{5}[/tex]
Step-by-step explanation:
Use the distance formula to determine the distance between the two points.
Distance = [tex]\sqrt{(1-4)^{2} + (4-(-2))^{2} }[/tex]
Simplify, and you get the answer.
[tex]3\sqrt{5}[/tex]
The volume of this cone is 3.0144 cubic centimeters. What is the height of this cone? Use ≈ 3.14 and round your answer to the nearest hundredth.
Therefore, the height of the cone is approximately 4.23 centimeters.
What is volume?Volume is a measure of the amount of space occupied by a three-dimensional object or region. It is the total amount of space enclosed by the boundaries of the object or region. Volume is usually measured in cubic units, such as cubic centimeters (cm³) or cubic meters (m³). Knowing the volume of an object can be useful for many purposes, such as determining how much material is needed to fill a container or how much space is needed to store a certain quantity of objects.
Here,
The formula for the volume of a cone is given by:
V = (1/3)πr²h
where V is the volume, r is the radius, and h is the height.
We are given that the volume of the cone is 3.0144 cubic centimeters, so we can plug this into the formula:
3.0144 = (1/3)πr²h
Next, we need to find the radius of the cone. Since we are not given the radius directly, we may need to use other information that is not given in the problem. If we assume that the cone is a right circular cone, then we can use the fact that the radius and height are proportional to find the radius:
r/h = 1/3
r = (1/3)h
We can substitute this expression for r into the volume formula:
3.0144 = (1/3)π((1/3)h)²h
Simplifying this equation:
3.0144 = (1/27)πh³
Multiplying both sides by 27/π:
h³ = 84.96
Taking the cube root of both sides:
h = 4.23 (rounded to the nearest hundredth)
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Matt knows 4 x 6 = 24. what other math fact does this help matt remember? circle the letter of the correct answer. sadie chose a 6 + 4 = 10 as the correct answer. how did she get that answer?
The math fact that 4 x 6 = 24 helps Matt remember that 6 x 4 = 24, and Sadie arrived at the answer 10 for 6 + 4 by incorrectly adding the numbers in reverse order.
Matt knows that 6 x 4 = 24. This helps him remember that 4 x 6 and 6 x 4 are both equal to 24.
The math fact that Matt can remember based on 4 x 6 = 24 is that multiplication is commutative. This means that the order of the numbers being multiplied doesn't affect the result. So, if 4 multiplied by 6 equals 24, it also implies that 6 multiplied by 4 would give the same result of 24.
Sadie arrived at the answer 10 for 6 + 4 by mistakenly swapping the order of the numbers and performing the addition incorrectly. The correct sum for 6 + 4 is indeed 10. Sadie's error demonstrates the importance of following the correct order of operations, where addition should be performed after ensuring the numbers are in the correct order.
As for Sadie's answer of 6 + 4 = 10, it is not directly related to the multiplication fact that Matt knows.
It is possible that Sadie used a different math fact or strategy to arrive at that answer.
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