Answer:
Step-by-step explanation:
This problem can be solved using the binomial distribution, which gives the probability of obtaining a certain number of successes in a fixed number of independent trials.
Let p be the probability that a single ibuprofen tablet has a defect, which is given as 15% or 0.15. Then, the probability that a single ibuprofen tablet does not have a defect is 1 - p = 0.85.
The acceptance sampling plan requires that at most one tablet does not meet the required specifications out of 29 tablets. This means that the shipment will be accepted if there are 0 or 1 defective tablets in the sample of 29.
The probability of getting exactly k defective tablets in a sample of n tablets is given by the binomial probability formula:
P(k) = (n choose k) * p^k * (1 - p)^(n - k)
where (n choose k) = n! / (k! * (n - k)!) is the number of ways to choose k defective tablets out of n, and ! denotes the factorial function.
To find the probability that the whole shipment will be accepted, we need to find the probability that there are 0 or 1 defective tablets in the sample of 29:
P(0 or 1 defects) = P(0 defects) + P(1 defect)
= (29 choose 0) * 0.15^0 * 0.85^29 + (29 choose 1) * 0.15^1 * 0.85^28
≈ 0.1098
Therefore, the probability that the whole shipment will be accepted is approximately 0.1098 or 10.98%
could someone help me on this (have to turn it in by tomorrow)
Among the given options, V [tex]57^\circ[/tex] is the closest estimate for the measure of the other acute angle.
What is the measure of the other acute angle?To find the measure of the other acute angle, we can use the fact that the sum of the angles of a triangle is 180°. Let x be the measure of the other acute angle. Then we have:
[tex]x + 32.9^\circ + 90^\circ = 180^\circ[/tex]
Simplifying the equation, we get:
[tex]x = 180^\circ - 32.9^\circ - 90^\circ[/tex]
[tex]x = 57.1^\circ[/tex]
So the exact measure of the other acute angle is [tex]57.1^\circ.[/tex]
Therefore, Among the given options, V [tex]57.1^\circ.[/tex] is the closest estimate for the measure of the other acute angle.
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In the diagram above, the sine of angle ACB = 3/5. What is the sine of angle ANM?
The sine of the angle ANM is equal to 3/5 as the triangles are similar.
How to calculate for the sine of angle ANM in the triangle.Given that the sine of angle ACB is equal to 3/5, line MN is parallel to BC and MN is midsegment of triangle ABC which implies that the triangles ABC and ANM are similar so;
sine ANM = 3/2 ÷ 5/2
sine ANM = 3/2 × 2/5
sine ANM = 3/5.
Therefore, the sine of the angle ANM is equal to 3/5 as the triangles are similar.
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Colin put some buttons on a table. There were 4 blue buttons, 5 red buttons, 7 tan buttons, and 8 white buttons.
Colin's cat jumped up and knocked 2 buttons onto the floor. What is the probability that the button on the floor was blue or red? Show or explain your work to justify your answer.
There are 4 + 5 + 7 + 8 = 24 buttons in total.
After the cat knocks 2 buttons onto the floor, there are 22 buttons remaining on the table. The probability that the first button knocked onto the floor is blue or red can be calculated as follows:
P(blue or red) = P(blue) + P(red)
P(blue or red) = 4/24 + 5/24
P(blue or red) = 9/24
P(blue or red) = 3/8
Therefore, the probability that the button on the floor was blue or red is 3/8 or 0.375.Answer:
Step-by-step explanation:
100 Points! Algebra question. Please show as much work as possible. Photo attached. Thank you!
The value of the constant term k in the exponential model of the bacteria population is k ≈ 0.0972
What is an exponential function?An exponential function is one in which the input variable is part of the exponent of the expression for the function.
The function for the population of the bacteria indicates;
[tex]P(t) = \frac{22,000 }{1 + 1.2\cdot e^{(-k\cdot t)}}[/tex]
The population of the bacteria after t = 1 hour is P(1) = 10,532
Therefore;
[tex]P(1) = \frac{22,000 }{1 + 1.2\cdot e^{(-k\times 1)}} = 10,532[/tex]
[tex]1 + 1.2\cdot e^{(-k\times 1)} = \frac{22,000}{10,532}[/tex]
[tex]1.2\cdot e^{(-k\times 1)} = \frac{22,000}{10,532} - 1[/tex]
[tex]e^{(-k\times 1)} = \frac{\frac{22,000}{10,532} - 1}{1.2}[/tex]
Taking the natural logarithm of both sides, we get;
[tex]\ln (e^{(-k\times 1)}) = \ln (\frac{\frac{22,000}{10,532} - 1}{1.2})[/tex]
[tex]\ln (e^{(-k)}) = \ln (\frac{\frac{22,000}{10,532} - 1}{1.2})[/tex]
[tex]\ln (e^{(-k)}) = -k = \ln (\frac{\frac{22,000}{10,532} - 1}{1.2})[/tex] ≈ -0.0972 (rounded to 4 decimal places)
-k ≈ -0.0972
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Let H: X – Y be a mapping. The set Y is called the
Let H: X – Y be a mapping. The set Y is called the codomain of the mapping H: X – Y.
In mathematics, a mapping or function H: X – Y is a relation between two sets, where the set X is called the domain and the set Y is called the codomain.
The mapping H assigns each element in X to a unique element in Y. The codomain of the mapping H is the set Y, which contains all the possible outputs that can be obtained from the mapping.
It represents the range of the mapping H and provides a reference set for the outputs of the function. The actual range of the function may be smaller than the codomain, depending on the elements in X that are mapped to.
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Passersby have taken 4 pieces of vanilla cake and 6 pieces of coconut cake from a sample tray. Based on past data, of the next 30 samples taken, how many should you expect to be pieces of vanilla cake?
Answer: The answer is actually 12 pieces of vanilla cake.
A triangle has side lengths of (6.1w + 7.8) centimeters, (1.4w + 8.1) centimeters
and (8.7x + 2.5) centimeters. Which expression represents the perimeter, in
centimeters,
of the triangle?
The expression that represents the perimeter of the triangle is 18.4 + 8.7x + 7.5w.
The perimeter of a triangle is the sum of the lengths of its sides. Using the given expressions for the side lengths of the triangle, we can write the perimeter as:
(6.1w + 7.8) + (1.4w + 8.1) + (8.7x + 2.5)
Simplifying and combining like terms, we get:
7.5w + 11.2x + 18.4
Therefore, the expression that represents the perimeter of the triangle is 18.4 + 8.7x + 7.5w.
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18 m
Bookwork code: N93
Tyler wants to cover this prism in glitter.
If 80 g of glitter is needed to cover each m², how much glitter will he
need to cover the prism completely?
23 m
allowed
10 m
3,517 XP
25 m
Allie Eggleton MENU
14m
Tyler will need a amount of 79,200 grams (or 79.2 kilograms) of glitter to cover the prism completely.
To calculate the amount of glitter needed to cover the prism completely, we first need to find the total surface area of the prism.
The prism consists of five faces: two rectangular faces with dimensions 18 m x 10 m, two triangular faces with base 18 m and height 10 m, and one rectangular face with dimensions 18 m x 25 m.
The total surface area of the prism can be calculated by adding the areas of all the faces together:
Total Surface Area = 2(18 m x 10 m) + 2(0.5 x 18 m x 10 m) + 18 m x 25 m
Total Surface Area = 360 m² + 180 m² + 450 m²
Total Surface Area = 990 m²
Given that 80 g of glitter is needed to cover each m², we can now calculate the total amount of glitter needed:
Total Glitter = Total Surface Area x Glitter per m²
Total Glitter = 990 m² x 80 g/m²
Total Glitter = 79,200 g
Therefore, Tyler will need 79,200 grams (or 79.2 kilograms) of glitter to cover the prism completely.
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Use the Law of Cosines. Find length x.
(Round the final answer to one decimal place as needed. Round all intermediate values to two decimal places as needed.)
18.2
Step-by-step explanation:
AB² =AC² + CB² -2(AC)(CB)CosA
X²=(17)² + (10)² - 2 (17)(10) Cos80
x² = 289 + 100- 340 cos 80
x= √289+100-340cos80
x= 18.2
8.G.1.2 A mathematical puzzle uses four triangles with the dimensions show below. Which of the following triangles are congruent? A. P and Q B. Q and R C. R and S D. S and P
The triangles which are congruent are P and Q. So, the correct answer is A).
Triangles are congruent if they have the same shape and size. This means that all corresponding angles and sides are equal. In this case, we can use the side lengths to determine which triangles are congruent.
Triangle P and Q have the same side lengths, so they are congruent (A). Triangle Q and R do not have the same side lengths, so they are not congruent (not B). Triangle R and S do not have the same side lengths, so they are not congruent (not C).
Triangle S and P do not have the same side lengths, so they are not congruent (not D). Therefore, the answer is A. Triangles P and Q are congruent.
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--The given question is incomplete, the complete question is given
" 8.G.1.2 A mathematical puzzle uses four triangles with the dimensions show below. Which of the following triangles are congruent? A. P and Q B. Q and R C. R and S D. S and P "--
The table shown below lists the U.S. presidents and their ages at inauguration. President Cleveland has two entries because he served two nonconsecutive terms.
Find the mean and the population standard deviation of the ages. Round each result to the nearest tenth.
mean
population standard deviation
The mean age of the U.S. presidents at inauguration is 54.7 years and the population standard deviation is approximately 5.7 years.
To find the mean and population standard deviation of the ages of the U.S. presidents at inauguration, we first need to calculate the sum of the ages and the number of presidents in the data set.
The sum of the ages is:
57 + 61 + 57 + 57 + 58 + 57 + 61 + 54 + 68 + 51 + 49 + 64 + 50 + 48 + 65 + 52 + 56 + 46 + 54 + 49 + 50 + 47 + 55 + 55 + 54 + 42 + 51 + 56 + 55 + 51 + 54 + 51 + 60 + 62 + 43 + 55 + 56 + 61 + 52 + 69 + 64 + 46 + 54 + 47 = 2,405
There are 44 presidents in the data set.
Therefore, the mean age is:
mean = sum of ages / number of presidents = 2,405 / 44 = 54.7
To find the population standard deviation, we first need to calculate the sum of the squared deviations from the mean:
(57 - 54.7)² + (61 - 54.7)² + ... + (47 - 54.7)² = 3,391.5
Then, we divide the sum of squared deviations by the number of presidents and take the square root:
population standard deviation = √(3,391.5 / 44) ≈ 5.7
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I’m not sure how to do the graph and it’s not letting me advance :(
Y=85.468x+ 985.029
R=0.988
To plot the above linear regression on a graph, follow the procedures outlined below.
What are your options?You may use the following steps to plot the supplied data on a graph:
1) Create an x- and y-axis coordinate plane.
2) Label the x-axis with the numbers 1 through 13 (to represent the 13 data points).
3) Label the y-axis with a suitable scale that encompasses the data's greatest and lowest values (e.g., 0 to 2200 with 200 increments).
4) For each point, try to find the associated x -value on the x-axis and the corresponding y-value on the y- axis, and then place a point at the intersection of the two values.
For example, if the first point is (1, 1000), you would identify the x-axis point labeled "1" and the y-axis point labeled "1000" and add a point at it intersection.
5) based on the pattern in the data, connect the points of the coordinares using a line or a curve. Because the data appears to increase gradually with some fluctuations in this case, a line connecting the points would be appropriate.
After plotting the data on the graph, you may study the pattern and draw inferences about the data's trend over time. Please see the attached sample graph.
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What are the solutions to the system of equations?
y=x^2−5x−6
y=2x−6
(−1, 0) and (−6, 0)
(7, 8) and (0, −6)
(−6, 0) and (0, −1)
(−1, 0) and (0, −6)
Please answer- I will report you if you do not answer and only want the points.
The solutions of the system of equations are (0, -6) and (7, 8)
How to find the solution of the system of equations?
Here we have the system of equations:
y=x^2−5x−6
y=2x−6
To solve this, we need to solve the equation:
x^2 - 5x - 6 = 2x - 6
x^2 - 7x = 0
x*(x - 7) = 0
We can see that the two solutions are:
x = 0
x = 7
Evaluating the line in these values we get:
y = 2*0 - 6 = -6
y = 2*7 - 6 = 8
Then the solutions are (0, -6) and (7, 8)
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Which of the following vectors represents u + v?
The vector u+v can be represented as < √85, -41.19° >, which is obtained by adding vector u marked on the y-axis from 0 to 6 and vector v marked on the x-axis from 0 to -7 on a coordinate plane.
To add vectors on the coordinate plane. The vector u is marked on the y-axis from 0 to 6, and the vector v is marked on the x-axis from 0 to -7.
To add them, we start at the tail of u and move horizontally to the left by 7 units (since v has a negative x-component) and then vertically up by 6 units (since u has a positive y-component) to reach the head of the resulting vector. This gives us the vector u+v.
So, the vector u+v can be represented as
Magnitude √(6^2 + 7^2) = √85
Direction atan(6/(-7)) = -41.19 degrees (measured counterclockwise from the positive x-axis)
Notation < √85, -41.19° >
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Ashley bought 2 CDs that were each the same price. Including sales tax, she paid a total of $31.40 . Each CD had a tax of $0.80. What was the price of each CD before tax?
Answer:
Each CD cost $14.90 before tax.
Step-by-step explanation:
Let's call the price of each CD before tax "x".
We know that Ashley bought 2 CDs, so the total cost before tax would be 2x.
We also know that the sales tax on each CD was $0.80, so the total sales tax for both CDs would be 2(0.80) = $1.60.
So the total cost including tax would be:
2x + 1.60 = 31.40
To solve for x, we can start by subtracting 1.60 from both sides:
2x = 29.80
Then, we can divide both sides by 2 to solve for x:
x = 14.90
Can someone help me with this please
The measure of x is 36.
We have,
The angle opposite to equal sides is equal.
And,
The sum of the triangle.
27 + 90 + (x + 27)= 180
27 + 90 + x + 27 = 180
x = 180 - 144
x = 36
Thus,
The measure of x is 36.
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ACTIVITY 2: Simplify the following.
The index forms are simplified to;
1. [tex]5^6^\sqrt{2}[/tex]
2.[tex]3^5\sqrt{3}[/tex]
3. [tex]2^2^\sqrt{25}[/tex]
How to simply the index formsIt is important to note the following about the rules of index forms;
Add the exponents when multiplying index forms of like basesSubtract the exponents when dividing index forms of like basesExponents of unlike bases cannot be add or subtracted.From the information given, we have that;
[tex]5^\sqrt{2}[/tex] × [tex]5^\sqrt{50}[/tex]
Add the exponents, we have;
[tex]5^\sqrt{2} ^+ 5\sqrt{2}[/tex]
Then, we have;
[tex]5^6^\sqrt{2}[/tex]
2. [tex]3\sqrt{12}[/tex] × [tex]3^\sqrt{27}[/tex]
We have;
[tex]3^2^\sqrt{3} + 3\sqrt{3}[/tex]
Add the exponents
[tex]3^5\sqrt{3}[/tex]
3. [tex]2^2^\sqrt{25}[/tex]
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Factor the expression. x^2-12x-45
Answer:
(x + 3)(x - 15)
Step-by-step explanation:
To factor the expression x^2 - 12x - 45, we need to find two numbers that multiply to -45 and add to -12. Let's use the method of decomposition to find these two numbers:
x^2 - 12x - 45
We need to find two numbers that multiply to -45 and add to -12. Let's try -15 and 3:
x^2 - 12x - 45 = x^2 - 15x + 3x - 45
Now we can group the first two terms and the last two terms:
x^2 - 15x + 3x - 45 = x(x - 15) + 3(x - 15)
We can see that both terms have a common factor of (x - 15), so we can factor this out:
x(x - 15) + 3(x - 15) = (x + 3)(x - 15)
Therefore, the expression x^2 - 12x - 45 can be factored as (x + 3)(x - 15).
Refer to the attachment ^-^
Hope Helpful ~
In order to save the world. Monnor must find the square of the sum of the roots of the equation: x^2-7x+5=0. What is the answer to Monnor's problem?
The answer to Monnor's problem is NOTA
How to find the answer to Monnor's problem?
For any quadratic equation of the form ax² + bx + c, the sum of roots is given by:
sum of roots = -b/a
In this case, x² - 7x + 5 = 0. Where a = 1 and b = -7. Thus:
sum of roots = -(-7)/1 = 7
Since Monnor must find the square of the sum of the roots of the equation, we have:
square of the sum of the roots = 7² = 49
Thus, the answer to Monnor's problem is NOTA
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What is the probability that
both events will occur?
First, find the probability of event A.
Two dice are rolled.
Event A: The first die is a 4 or less.
Event B: The second die is even.
The probability that both events A and B will occur is 1/3 or approximately 0.3333.
To find the probability of both events A and B occurring, we need to calculate the individual probabilities of each event and then multiply them together.
Event A: The first die is a 4 or less.
In a standard six-sided die, there are four outcomes (1, 2, 3, 4) that satisfy this condition. Out of the six possible outcomes, four are favorable, so the probability of event A is 4/6 or 2/3.
Event B: The second die is even.
In a standard six-sided die, there are three even outcomes (2, 4, 6) out of the six possible outcomes.
Therefore, the probability of event B is 3/6 or 1/2.
To find the probability of both events occurring, we multiply the probabilities of each event:
[tex]P(A and B) = P(A) \times P(B) = (2/3) \times (1/2) = 1/3[/tex]
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Please reply me as soon as possible with step by step answer for this
The length of the curve y = 5 - 4x, -2 ≤ x ≤ 2, is 4√(17).
What is the length of the curve?To use the arc length formula, we need to find the derivative of the curve y = 5 - 4x:
y' = -4
Then, we can use the arc length formula:
L = ∫[a,b] √(1 + (y')^2) dx
where a and b are the limits of integration. In this case, a = -2 and b = 2.
L = ∫[-2,2] √(1 + (-4)^2) dx
= ∫[-2,2] √(17) dx
= √(17) * [x]_(-2)^(2)
= 4√(17)
So the length of the curve y = 5 - 4x, -2 ≤ x ≤ 2, is 4√(17).
To check this answer, we can note that the curve is a line segment with endpoints (-2, 13) and (0.75, 1), and we can calculate its length using the distance formula:
L = √((0.75 - (-2))^2 + (1 - 13)^2)
L = √(18.25 + 144)
L = √(162.25)
L = 4√(17)
This matches our previous answer, so we can be confident that the length of the curve is 4√(17).
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The first three terms of a geometric sequence are as follows.
810, 270, 90
Find the next two terms of this sequence.
Answer:
30 and 10
Step-by-step explanation:
Main concepts:
Concept 1. Geometric Sequence
Concept 2. Common ratio
Concept 3. Finding the next terms
Concept 1. Geometric Sequence
Geometric sequences are a specific type of sequence with a pattern where a specific number is multiplied to each term to get the next term.
For instance, a completely different geometric sequence 1,2,4,8,16,... is geometric because you multiply any term by 2 to get the next term.
Concept 2. Common ratio
In a geometric sequence, this number that you can multiply by to get the next term (in the "1,2,4,8,16,..." example, the number 2) is called the common ratio because taking the ratio of two sequential terms of the sequence (dividing two terms in a row) always gives the same answer:
2/1 = 24/2 = 28/4 = 216/8 = 2This process of finding ratios will yield a common ratio only if the sequence is a Geometric Sequence.
Concept 3. Finding the next terms
Since we're told that the sequence we're given in the question is a Geometric sequence, it must have a common ratio (otherwise, it wouldn't be a geometric sequence).
Find the common ratio by dividing sequential terms:
270/810 = 1/3
90/270 = 1/3
So, for the sequence in the question, the common ratio is 1/3. Each term is multiplied by 1/3 to get the next term in the sequence. (This is equivalent to dividing each term by 3 to get the next term in the sequence, if you prefer division and/or to avoid fractions)
So, to get the next two terms in the sequence, multiply by the common ratio:
90 * 1/3 = 30
30 * 1/3 = 10
So, the next two terms of the sequence are 30 and 10
Look at the box plot shown below. What is the minimum value of the data set?
A box plot labeled Volunteer Service Hours with the beginning of quartile 1 at 13, the beginning of quartile 2 at 16.5, the beginning of quartile 3 at 20, the beginning of quartile 4 at 23, and the end of quartile 4 at 27.
The minimum value of the data set is 10.5.
Box plots are an effective graphical tool used to display a summary of a dataset. They provide a visual representation of the minimum and maximum values, quartiles, and outliers of the data. They are commonly used in statistics and can provide valuable insights into a dataset.
Now, let's consider the box plot in question. The box plot is labeled "Volunteer Service Hours" and it has four quartiles, each marked by a horizontal line. The first quartile (Q1) is marked at 13, the second quartile (Q2) is marked at 16.5, the third quartile (Q3) is marked at 20, and the fourth quartile (Q4) is marked at 23, with the end of the box extending to 27.
The minimum value of the data set can be found at the lower whisker of the box plot.
The lower whisker represents the minimum value that is not an outlier.
In this box plot, we do not see any outliers, so the minimum value of the dataset is represented by the lower end of the whisker, which is located at 10.5.
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Solve the given equations. Place the name of each equation in order by the least number of solutions to the greatest number of solutions.
The order of the equations from least number of solutions to greatest number of solutions is: C, B , and A.
What is equation and expression?In algebra, an expression is made up of several numbers, variables, and mathematical operations including addition, subtraction, multiplication, and division. One expression is, for instance, 3x + 2y - 5.
In algebra, an equation is a claim that two expressions are equal to one another. Often, it asks us to determine the value of a variable that would make the equation true.
Equation A:
4x + 12 = 2(2x + 3) + 6
4x + 12 = 4x + 12
This equation has infinitely many solutions, as 0 = 0 is always true.
Equation B:
5(x - 1) = 3(x + 7)
5x - 5 = 3x + 21
2x = 26
x = 13
This equation has one solution, which is x = 13.
Equation C:
2x - 4 = 2(x + 18)
2x - 4 = 2x + 36
-4 = 36
This equation has no solutions.
Hence, the order of the equations from least number of solutions to greatest number of solutions is: C, B , and A.
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a triangle has vertices P(-4,8), I (0,2) and N (4,-2). What are. the coordinates of the centroid of the triangle
The coordinates for the centroid of the triangle is (0, 2.67)
How do we calculate the centroid of the triangle?The centroid of a triangle is the place where the three medians of the triangle meet or intersect.
To find the centroid of the triangle, we use the formula
(x₁ + x₂ + x₃)/3 , (y₁ + y₂ + y₃)/3
We add all the x coordinates together and divide by 3, we also do the same for the y coordinates.
It becomes x = (-4 + 0 + 4)/3
y = (8 + 2 + (-2))/3
Therefore, the centroid is (0, 2.67)
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(-2-3)-(4-5)+ (−1+6)−(−9+8)=
Answer:
Step-by-step explanation:
(-2-3)-(4-5)+ (−1+6)−(−9+8)
-5-4+5-1+6+9-8
-9+4+15-8
-5+7
2
solve for x image attached please help x, 3 ,7 set up the proportion x/3=?
The proportion relation obtained from the similar triangles indicates that the x/3 = 10/x
What are similar triangles?Similar triangles are triangles that have the same shape but their sizes may vary.
The proportion equation from the image based on the ratio of the corresponding sides of the similar right triangles can be found as follows;
The side x is the hypotenuse side of the smallest right triangle
The ratio x/3, is equivalent to the ratio of the hypotenuse side to the shortest side of the right triangle
The corresponding ratio in the medium triangle is ((x² - 3²) + 7²)/(x² - 3²)
((x² - 3²) + 7²)/(x² - 3²) = (x² + 40)/(x² - 3²)
The corresponding ratio in the large similar right triangle is (7 + 4)/x = 10/x
Therefore, the corresponding ratio is; x/3 = 10/x
The proportion is; x/3 = 10/x
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Sketch the graph of the following function. Describe how
the graph can be obtained from the graph of the basic
exponential function ex.
f(x) = 2 (4-ex)
Use the graphing tool to graph the equation.
someone help pls, im not sure what to put in the little box for the vertical shift and vertical shrink
The vertical shift and vertical shrink of the exponential function are 2 and 1/2 respectively and the graph of the function is attached below
What is the graph of exponential function?A curve displaying an exponential function is known as an exponential graph. A curve with a horizontal asymptote and a rising or decreasing slope characterizes the graph of an exponential function. i.e., it begins as a horizontal line, grows or drops gradually, and then the growth or decay accelerates.
The vertical shift and vertical shrink of the function f(x) = 1/2(4 - eˣ) are 2 and 1/2
The vertical shift = 2
vertical shrink = 1/2
Kindly find the attached graph below
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Help Please The sum of two even numbers is even. The sum of 6 and another number is even. What conjecture can you make about the other number?
A) The other number is odd.
B) The number is even.
C) Not enough information.
D) The number is 8.
The conjecture that can be made about the other number is option A: the other number is odd.
Let's assume that the two even numbers are x and y. Then, we can write their sum as x + y = 2a, where a is some even number.
Now, let's consider the sum of 6 and another number, which we can represent as 6 + z, where z is some unknown number. If this sum is even, then we can write it as 2b, where b is some even number.
So, we have the equations:
x + y = 2a (since the sum of two even numbers is even)
6 + z = 2b (since the sum of 6 and another number is even)
We can subtract 6 from both sides of the second equation to get:
z = 2b - 6
Now, we can substitute this expression for z into the first equation:
x + y = 2a
And we get:
x + y + z - 2z = 2a
x + (y + z) - 2z = 2a
x + (2b - 6) - 2z = 2a
x + 2b - 2z - 6 = 2a
This equation tells us that x + 2b - 2z - 6 is an even number (since 2a is even). Since x and 2b are even, the expression -2z - 6 must also be even. Therefore, -2z must be even. This means that z is odd (since an even number minus an even number is even, and -6 is even).
So, we can conclude that the other number (z) is odd. Option A is the correct answer.
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What is the unknown value that makes this statement true:
25% of _ is 30
Answer:
120
Step-by-step explanation:
25% is equal to 1/4. If you divide 30 by 1/4 you get 120. To check this, if you multiply 120 by 1/4 you get 30.
Answer: 120
Step-by-step explanation:
In order to find the missing value, divide the provided value by the percentage as follows:
30 / 0.25 = 120
This can be double-checked by plugging the number into the statement afterwards: 25% of 120 is 30, which is true