There are 42 yellow skittles in the box.
Based on the given information, we know that the ratio of green skittles to yellow skittles is 5:7. This means that for every 5 green skittles, there are 7 yellow skittles.
To find out how many yellow skittles are in the box, we need to know how many sets of 5 green skittles there are. We can do this by dividing the total number of skittles in the box (30) by 5 (since there are 5 green skittles for every set).
30 ÷ 5 = 6
This means there are 6 sets of 5 green skittles in the box.
Now we can use the ratio of 5:7 to find out how many yellow skittles there are in each set:
5 green skittles : 7 yellow skittles
Since there are 7 yellow skittles in each set, we can find the total number of yellow skittles by multiplying 7 by the number of sets (6):
7 x 6 = 42
There are 42 yellow skittles in the box.
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Which list correctwhich list correctly identifies the steps to solving a word problem?ly identifies the steps to solving a word problem?
There is no one definitive list of steps to solving a word problem, as different types of problems may require different approaches.
However, a general set of steps that can be useful in solving many word problems is:
1. Read the problem carefully to understand what it is asking.
2. Identify the relevant information and the unknown quantity you need to find.
3. Translate the problem into an equation or set of equations that relate the given information to the unknown quantity.
4. Solve the equation(s) to find the value of the unknown quantity.
5. Check your answer to make sure it makes sense in the context of the problem.
Additional steps or variations on these steps may be necessary depending on the specific problem, but this general framework can be a useful starting point.
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The claim is that for 12 AM body temperatures, the mean is μ>98. 6°F. The sample size is n=8 and the test statistic is t= -2. 687
what is p value?
Value of p is approximately 0.987.
To find the p-value for the given claim that the mean body temperature at 12 AM is μ > 98.6°F with a sample size of n=8 and a test statistic of t=-2.687, follow these steps:
1. Identify the degrees of freedom: Since the sample size is n=8, the degrees of freedom (df) are calculated as n-1, which is 8-1=7.
2. Determine the tail of the test: The claim states that the mean body temperature is greater than 98.6°F (μ > 98.6), which indicates a right-tailed test.
3. Find the p-value using the t-distribution table or a calculator: With a test statistic of t=-2.687 and df=7, you can look up the corresponding p-value using a t-distribution table or an online calculator. Since it's a right-tailed test, the p-value will be the area to the right of the test statistic in the t-distribution.
After completing these steps, the p-value is found to be approximately 0.987.
Therefore, your answer is: The p-value for the claim that the mean body temperature at 12 AM is μ > 98.6°F, given a sample size of n=8 and a test statistic of t=-2.687, is approximately 0.987.
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Create a story context for the following expressions ( 5 1/4 - 2 1/8) divided by 4 and 4 x ( 4. 8/0. 8)
To create a story context for the given expressions, which are (5 1/4 - 2 1/8) divided by 4 and 4 x (4.8/0.8).
Imagine there is a fruit store where you have to prepare fruit baskets for a local charity event. The first expression (5 1/4 - 2 1/8) divided by 4 can be a story about the number of apples to be distributed equally among four baskets.
You initially have 5 1/4 dozen apples, but you realize that 2 1/8 dozen of them are not suitable for the baskets.
To find out how many dozens of apples should be put into each basket, you need to subtract the unsuitable apples and divide the result by 4:
(5 1/4 - 2 1/8) / 4
Now, let's move on to the second expression, 4 x (4.8/0.8). This can be a story about the number of oranges you need to purchase for the fruit baskets. You already have 4.8 dozen oranges, but you need to add more to reach the desired ratio of oranges to apples.
Your friend suggests that for every 0.8 dozen oranges you currently have, you should add 4 more dozen oranges. To find out how many dozens of oranges you need to buy, you can use this formula:
4 x (4.8/0.8)
By creating these story contexts, you can use the given expressions to solve real-life problems, such as distributing fruits among charity baskets.
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The diameter of a circle measures 10m. What is the circumference of the circle?
Use for 3. 14 and do not round your answer. Be sure to include the correct unit in your answer
The circumference of the circle with a diameter of 10m is 31.4m, using 3.14 as the value of pi and including the correct unit in the answer.
The formula for the circumference of a circle is C = πd, where C is the circumference and d is the diameter. Substituting the given value of the diameter, we get C = 3.14 x 10m = 31.4m as the circumference of the circle.
Since the value of pi is irrational, it cannot be expressed as a finite decimal or fraction, so we use an approximation, such as 3.14, to calculate the circumference. It is important to include the correct unit, which is meters in this case, in the answer to indicate the quantity being measured. Therefore, the circumference of the circle is 31.4m.
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Use the method of Lagrange multipliers to find the points on the
curve x2 + y2 −6x + 7 = 0 that are closest to and furthest from the
point P = (0, 3).
Using the value of λ = (18 + √130)/18, we get: x = 3λ ≈ 4.895 y = 3λ - 3 ≈ 5.316 So the point on the curve that is furthest from P is approximately (4.895, 5.316).
To use the method of Lagrange multipliers, we first need to define our objective function and our constraint. Our objective function is the distance between the point P and a point on the curve, which can be expressed as:
f(x, y) = (x - 0)^2 + (y - 3)^2 = x^2 + (y - 3)^2
Our constraint is the equation of the curve:
g(x, y) = x^2 + y^2 - 6x + 7 = 0
To use the method of Lagrange multipliers, we need to introduce a new variable λ and solve the following system of equations:
∇f = λ∇g
g(x, y) = 0
where ∇f and ∇g are the gradients of f and g, respectively.
Taking the partial derivatives of f and g with respect to x and y, we have:
∂f/∂x = 2x
∂f/∂y = 2(y - 3)
∂g/∂x = 2x - 6
∂g/∂y = 2y
Setting ∇f equal to λ∇g, we have:
2x = λ(2x - 6)
2(y - 3) = λ(2y)
Simplifying these equations, we get:
x = 3λ
y = 3λ - 3
Substituting these expressions into the equation of the curve, we get:
(3λ)^2 + (3λ - 3)^2 - 6(3λ) + 7 = 0
Simplifying this equation, we get:
18λ^2 - 36λ + 13 = 0
Solving for λ, we get:
λ = (18 ± √130)/18
Substituting these values of λ into our expressions for x and y, we get the coordinates of the points on the curve that are closest to and furthest from the point P.
To find the point that is closest to P, we need to minimize the objective function f(x, y). Using the value of λ = (18 - √130)/18, we get:
x = 3λ ≈ 1.105
y = 3λ - 3 ≈ -0.316
So the point on the curve that is closest to P is approximately (1.105, -0.316).
To find the point that is furthest from P, we need to maximize the objective function f(x, y). Using the value of λ = (18 + √130)/18, we get:
x = 3λ ≈ 4.895
y = 3λ - 3 ≈ 5.316
So the point on the curve that is furthest from P is approximately (4.895, 5.316).
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Will mark brainliest (to whoever explains this clearly)
Lizzie came up with a divisibility test for a certain number m that doesn't equal 1:
-Break a positive integer n into two-digit chunks, starting from the ones place. (For example, the number 354764 would break into the two-digit chunks 64, 47, 35. )
- Find the alternating sum of these two-digit numbers, by adding the first number, subtracting the second, adding the third, and so on. (In our example, this alternating sum would be 64-47+35=52. )
- Find m, and show that this is indeed a divisibility test for m (by showing that n is divisible by m if and only if the result of this process is divisible by m)
Lizzie's divisibility test states that a number n is divisible by a certain number m if and only if the alternating sum of its two-digit chunks is divisible by m.
How does Lizzie's divisibility test work?Lizzie's divisibility test involves breaking a positive integer into two-digit chunks, finding the alternating sum of these chunks, and then determining if the result is divisible by a certain number m.
To apply the test:
Break the positive integer n into two-digit chunks from right to left.Calculate the alternating sum of these two-digit numbers, adding the first number, subtracting the second, adding the third, and so on.Find m, the divisor for which you want to test divisibility.If the result of the alternating sum is divisible by m, then n is also divisible by m.To prove that this is a divisibility test for m, you need to show that n is divisible by m if and only if the result of the alternating sum is divisible by m.
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Mark makes a pattern that starts with 5 and uses the rule "subtract 1, and then multiply by 3. " Which expression can be used to find the third number in Markâs pattern?
A. 5â1â3â1â3
B. 3(5â1)+3(5â1)
C. 3[3(5)â1]
D. 3[3(5â1)â1]
Choose one correct answer
The expression that can be used to find the third number in Mark's pattern is 3[3(5) - 1]. The correct option is C.
In Mark's pattern, the rule is to subtract 1 from the previous number and then multiply the result by 3.
Starting with 5 as the first number, we can apply this rule step by step to find the subsequent numbers.
First step: Subtract 1 from 5, giving us 4.
Second step: Multiply 4 by 3, which equals 12.
So, the second number in Mark's pattern is 12.
Now, to find the third number, we apply the same rule.
First step: Subtract 1 from 12, giving us 11.
Second step: Multiply 11 by 3, which equals 33.
Therefore, the third number in Mark's pattern is 33.
Option C, 3[3(5) - 1], correctly represents this calculation, where 5 is subtracted by 1, multiplied by 3, and then multiplied by 3 again.
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solve the equation
i will give brainliest
Answer:
5.09
Step-by-step explanation:
You eliminate the decimal by multiplying both sides by 10:
10(.25x+0.5)=10(0.61+0.14x)
Then you get your new equation and combine like terms:
25x+5=61+14x
-14x -14x
11x+5=61
11x+5=61
-5 -5
11x=61
Then finally you do 61/11 which gets you around 5.09 if you round to 2 decimal places.
Giving away a lot of points please don't put something random, no explanation is needed only the answer.
Thank you
The theoretical probability is: 12.5%. After 100 trials, the experimental probability is of: 20%. After 400 trials, the experimental probability is of: 11%. After more trials, the experimental probability is closer to the theoretical probability.
How to calculate a probability?A probability is calculated as the division of the desired number of outcomes by the total number of outcomes in the context of a problem/experiment.
The dice has eight sides, hence the theoretical probability of rolling a six is given as follows:
1/8 = 0.125 = 12.5%.
(eight sides, each of them is equally as likely).
The experimental probabilities are obtained considering the trials, hence:
100 trials: 20/100 = 0.2 = 20%. -> results given in the text.400 trials: 44/400 = 0.11 = 11%.The more trials, the closer the experimental probability should be to the theoretical probability.
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Use the compound-interest formula to find the account balance A, where P is principal, r is interest rate, n is number of compounding periods per year, t is time, in years, and A is account balance. P r compounded t $ % Daily
The account balance after 2 years is approximately $107.15.
What is the formula calculating account balance A, given the principal P, interest rate r, number of compounding periods per year n, time t in years, and A is account balance when interest is compounded daily?The compound interest formula is given by:
A = P * [tex](1 + r/n)^(^n^*^t^)[/tex]
Where:
P = Principal
r = Annual interest rate (as a decimal)
n = Number of times interest is compounded per year
t = Time in years
A = Final account balance
In this problem, we are given:
P = $100
r = 3.5% per year = 0.035 per year
n = 365 (since interest is compounded daily)
t = 2 years
Substituting these values in the formula, we get:
A = [tex]100 * (1 + 0.035/365)^(^3^6^5^*^2^)[/tex]
A ≈ $107.15
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i need help with this
Answer:
[tex]x = \$2.06[/tex]
Step-by-step explanation:
Representing the price of one juice bottle as x, we can construct the equation:
[tex]15x + \$1.93 = \$32.83[/tex]
From here, we can solve for x.
↓ subtracting $1.93 from both sides
[tex]15x = \$32.83 - \$1.93[/tex]
[tex]15x = \$30.90[/tex]
↓ dividing both sides by 15
[tex]\boxed{x = \$2.06}[/tex]
What is 4x+2/39=5x-2/42?
We use the fundamental property of proportions where:
a/b = c/d if a • d = b • c[tex] \space [/tex]
[tex] \bf \frac{4x + 2}{39} = \frac{5x - 2}{42} \\ \\ \bf 39 \cdot (5x - 2) = 42 \cdot (4x + 2) \\ \\ \bf 195x - 78 = 168x + 84 \\ \\ \bf 195x - 168x = 84 + 78 \\ \\ \bf 27x = 162 \\ \\ \bf x = \frac{162}{27} \implies \bf \red{ \boxed{ \bf x = 6} } [/tex]
The number is 6.
Hope that helps! Good luck! :)
find the extremum of each function using the symmetry of its graph. Classify the etremum of the function as maximum or a minimum and state the of x at which it occurs k(x)(300+10x)(5-0.2x)
The extremum of the function is a minimum at x = -2.5
The given function is k(x)(300+10x)(5-0.2x).
To check for symmetry about the y-axis, we replace x with -x in the given function and simplify as follows:
k(-x)(300-10x)(5+0.2x)
To check for symmetry about the x-axis, we replace y with -y in the given function and simplify as follows:
k(x)(300+10x)(5-0.2x) = -k(x)(-300-10x)(5+0.2x)
To find these points, we set the function equal to zero and solve for x:
k(x)(300+10x)(5-0.2x) = 0
This equation has three solutions:
x = 0
x = -30
x = 25.
The midpoint of the line segment connecting these points is
(x1+x2) ÷ 2 = (-30+25) ÷ 2 = -2.5.
To determine the type of extremum at this point, we need to check the sign of the second derivative. The second derivative of the function is:
k(x)(-1200+x)(0.2x+15)
Since the function is symmetric about the x-axis, the second derivative will be negative at the extremum if it is maximum and positive if it is a minimum.
When x = -2.5, the second derivative is positive, which means that the function has a minimum at x = -2.5.
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I’m giving 10 points.
Answer:
12
Step-by-step explanation:
-3(b - 5) + 7a - (9 - a) ^6 a = 7 and b = -4
-3(-4 - 5) + 7(7) - (9 - 7)^6
= -3(-9) + 49 - (2)^6
= 27 + 49 - (64)
= 27 + 49 - 64
= 76 - 64
= 12
Given the following exponential function, identify whether the change represents
growth or decay, and determine the percentage rate of increase or decrease.
y = 660(0. 902)
The function represents exponential decay with a percentage rate of decrease of 9.8%.
The given exponential function y = 660(0.902) represents decay because the base of the exponent is less than one.
This means that the output value of the function will decrease as the input value increases.
To determine the percentage rate of decrease, we need to find the value of the base of the exponent subtracted from one and then multiply it by 100.
The base of the exponent is 0.902, so we subtract it from one to get 0.098.
Multiplying by 100 gives us a percentage rate of decrease of 9.8%.
This means that for every unit increase in the input value, the output value of the function will decrease by approximately 9.8%.
For example, if the input value increases from 1 to 2, the output value will decrease by 9.8%, and if the input value increases from 2 to 3, the output value will again decrease by 9.8%.
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Let's use Priya as an example again. The number of hairs per square cm varies from person to person, but Priya has approximately 150 hairs per square cm.
She measures the diameter of her scalp from front to back and ear to ear and she finds that it is about 28cm in both directions. Her head is round so that makes her think that she could use the area of a circle to estimate how many total hairs she has on her head.
a. What is the area of Priya's scalp?≈
≈
cm2
b. About how many strands of hair are on Priya's head? ≈
≈
strands of hair
a. The area of Priya's scalp is ≈ [tex]615.75 cm^2[/tex]. b. Priya has approximately 92,363 strands of hair on her head.
a. The area of Priya's scalp can be estimated using the formula for the area of a circle, which is A = π[tex]r^2[/tex] ,where r is the radius (half the diameter) of the circle. Since Priya's diameter is 28cm, her radius would be 14cm. So, the area of her scalp would be:
A = π[tex](14cm)^2[/tex]
A ≈[tex]615.75 cm^2[/tex]
b. To estimate how many strands of hair Priya has on her head, we can multiply the number of hairs per square cm by the total area of her scalp. So, if Priya has approximately 150 hairs per square cm and her scalp has an estimated area of 615.75 cm^2, then:
Total number of hairs ≈ [tex]150 hairs/cm^2 * 615.75 cm^2[/tex]
Total number of hairs ≈ 92,362.5 hairs
Therefore, we can estimate that Priya has approximately 92,363 strands of hair on her head.
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The student council set a goal of raising at least $500 in flower sales. So far it
has raised $415.
Part A
Write an inequality to show how many more dollars, d, the student council needs
to reach its goal.
Answer
Part B
How many solutions does the inequality have? Explain your reasoning by giving
some examples of solutions to the inequality.
In both cases, the inequality holds true. The inequality is 415 + d ≥ 500.
Part A:
To write an inequality that represents the situation, we can use the following format: money raised so far + additional money needed ≥ goal. In this case, the money raised so far is $415, and the goal is $500. Let d represent the additional money needed. So the inequality would be:
415 + d ≥ 500
Part B:
The inequality 415 + d ≥ 500 has infinitely many solutions, as there are countless values of d that can satisfy the inequality. This is because as long as the total amount raised is equal to or greater than $500, the student council meets its goal. For example, if d is 85, then the council would exactly meet its goal (415 + 85 = 500). If d is 100, the council would exceed its goal (415 + 100 = 515). In both cases, the inequality holds true.
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Need HELP ASAP!! please
Answer :
D. XY = 5 , YZ = 2Step-by-step explanation :
As We Know that Opposite sides of the Parallelogram are equal.
SO,
(i) YZ = XW (opposite sides)
YZ = 2bXW = b + 1=> 2b = b + 1
=> 2b - b = 1
=> b = 1
Since, YZ = 2b
=> YZ = 2 × 1
=> YZ = 2.
Also,
(ii) XY = WZ (opposite sides)
XY = 3a - 4 WZ = a + 2=> 3a - 4 = a + 2
=> 3a - a = 2 + 4
=> 2a = 6
=> a = 6/2
=> a = 3 .
Since, XY = 3a - 4
putting the value of a = 3.
=> 3(3) - 4
=> 9 - 4
=> 5
XY = 5.
Therefore, Option D is the required answer.
Solve the following quadratic function by utilizing the square root method. Y=xsquared minus nine
The solution of the quadratic equation is y = (x + 3)(x - 3).
What is the solution of the quadratic equation?The solution of the quadratic equation is calculated by applying difference of two squares as shown below;
y = x² - 9
y = x² - 3²
the difference of two square of x² - 3² = (x + 3)(x - 3)
The solution of the quadratic equation is calculated as;
y = (x + 3)(x - 3)
Thus, solution of the quadratic equation has been determined using square root method.
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The data set shown below represents the number of times some families went out for dinner the previous week. 4, 2, 2, 0, 1, 6, 3, 2, 5, 1, 2, 4, 0, 1 an unnumbered number line labeled numbers of dinners out. create a dot plot to represent the data. what can you conclude about the dot plot of the data set? check all that apply. the range of the number line should be 0 to 7 to represent the frequency. four families said they ate out twice the previous week. one family said they ate out 5 times the previous week. the data set is symmetrical. the median best represents the data set.
Answer: B, C, E
Step-by-step explanation: Other dude posted wrong answer.
Ray and Kelsey are working to graph a third-degree polynomial function that represents the first pattern in the coaster plan. Ray says the third-degree polynomial has four intercepts. Kelsey argues the function can have as many as three zeros only. Is there a way for the both of them to be correct? Explain your answer.
Kelsey has a list of possible functions. Pick one of the g(x) functions below and then describe to Kelsey the key features of g(x), including the end behavior, y-intercept, and zeros.
g(x) = (x + 2)(x − 1)(x − 2)
g(x) = (x + 3)(x + 2)(x − 3)
g(x) = (x + 2)(x − 2)(x − 3)
g(x) = (x + 5)(x + 2)(x − 5)
g(x) = (x + 7)(x + 1)(x − 1)
For the g(x) functions provided, here are their key features:
g(x) = (x + 2)(x − 1)(x − 2)
End behavior: As x approaches negative or positive infinity, g(x) approaches positive infinity.
Y-intercept: g(0) = -4
Zeros: x = -2, 1, 2
How to explain the functionRay and Kelsey could both be accurate, all depending on the stated third-degree polynomial function.
It is conceivable for a third-degree polynomial to present up to three zeros, thus corroborating Kelsey's point that the function can have up to three intersection points with the x-axis maximum. Moreover, it can even occur that this function possesses a repeatable zero, causing a fourth interception.
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15. It is given that X~B(5,p) and P(X=3) = P(X=4)
Find the value of p, given that 0 < p < 1
[3 marks]
Given that 0 < p < 1 for X~B(5,p) and P(X=3) = P(X=4), so the value of p is 2/3.
We know that X~B(5,p) and P(X=3) = P(X=4).
Using the probability mass function of a binomial distribution, we can write:
P(X=3) = (5 choose 3) * p³ * (1-p)²
P(X=4) = (5 choose 4) * p⁴ * (1-p)¹
Since P(X=3) = P(X=4), we can set these two expressions equal to each other and simplify:
(5 choose 3) * p^3 * (1-p)² = (5 choose 4) * p⁴ * (1-p)¹
10p^3(1-p)^2 = 5p^4(1-p)
Dividing both sides by [tex]p^{3(1-p)[/tex] and simplifying, we get:
10(1-p) = 5p
10 - 10p = 5p
10 = 15p
p = 2/3
Therefore, the value of p is 2/3, given that 0 < p < 1.
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Find the volume of the cone to the nearest whole number. Use 3. 14
for it.
Cone
Radius Height
Volume
varrh
Worms
3in.
6in.
Tree
Gum
The volume of the cone is 57 cubic inches. To find the volume of the cone, we use the formula: V = (1/3)π[tex]r^{2}[/tex]h, where r is the radius of the cone, h is the height of the cone, and π is approximately 3.14.
Given that the radius of the cone is 3 inches and the height is 6 inches, we can substitute these values into the formula and solve for V: V = (1/3)π([tex]3^{2}[/tex])(6), V = (1/3)π(9)(6), V = (1/3)(3.14)(54), V = 56.52 cubic inches
Rounding to the nearest whole number, the volume of the cone is 57 cubic inches.
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Camila empieza a jugar un video juego que tiene 840 niveles. La primera semana, supera 16
parte de los niveles; la segunda semana, 14
de lo que le hace falta y la tercera, 45
de los niveles que le hacían falta por superar.
Si en la cuarta semana Camila pretende terminar el juego, ¿cuántos niveles debe superar?
A.
95
B.
105
C.
182
D.
420
The amount of levels left at the end is 105.
How many levels Camila needs to complete?There is a total of 840 levels in the game.
On the first day she completes 1/6 of the total, so she completes:
840/6 = 140
The remaining is 840 - 140 = 700
Then she completes 1/4 of that, which is:
(1/4)*700 = 175
So now she has left 700 - 175 = 525
Then she completes 4/5, so she does:
(4/5)*525 = 420
The amount left is: 525 - 420 = 105
The correct option is B.
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What technique is happening to this object?
Step-by-step explanation:
Looks as though it has been cropped.....picture is only a PART of the original...it has been 'cut off' or 'cropped' on both sides .
Using the probability distribution represented by the graph
below, find the probability that the random variable, X, falls
in the shaded region.
Using probability, we can find probability of the random variable, x falling in the shaded region as to be 5/8.
Define probability?Probability is the ratio of favourable outcomes to all other potential outcomes of an event. The symbol x can be used to express the quantity of successful outcomes for an experiment with 'n' outcomes. The following formula can be used to determine an event's probability.
Positive Outcomes/Total Results = x/n = Probability(Event)
Let's look at a simple example to better understand probability. Imagine that we need to predict whether it will rain or not. The right response to this question is "Yes" or "No." Whether it rains or not is uncertain. Probability is used to predict the outcomes when tossing coins, rolling dice, or drawing cards from a deck of cards.
Here in the question,
Total region = 8.
Shaded region = 5
So, probability of falling in the shaded region = 5/8
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The stem-and-leaf plot shows the number of push-ups done by each student in a Physical Education class. What is the mode of the number of push-ups?
The mode of the number of push-ups is 40.
What is the mode of the number of push-ups shown in the stem-and-leaf plot for a Physical Education class?A stem-and-leaf plot is a way of organizing data where the stems (the tens digit) and leaves (the ones digit) are separated. Each row represents a stem and the leaves represent the values that belong to that stem.
Here's the stem-and-leaf plot for the number of push-ups:
3 | 5 6 8
4 | 0 0 1 2 2 3 5 6 8 9
5 | 0 1 3 4 5 5 7 8 9
6 | 0 1 2 2 3 4 5 7 8 9
7 | 0 2 5 8
8 | 1 2 4
9 | 0
To find the mode, we look for the value that appears most frequently. In this case, the number 40 appears three times, which is more than any other value. Therefore, the mode of the number of push-ups is 40.
Note that the stem-and-leaf plot makes it easy to see the distribution of the data. For example, we can see that there are a lot of values between 40 and 49, and relatively few values above 60.
We can also see that there are no values between 90 and 99.
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Suppose M and C each represent the position number of a letter in the alphabet, but M represents the letters in the original message and C represents the letters in a secret code. The equation c=m+2 is used to encode a message.
The equation that can be used to decode the secret code is m = c - 2
How so you find the equation to decode the secret code?For you to decode the secret message, you need to turn the the encoding process around. Find the inverse.
Since the encoding process uses the equation c = m + 2, to decode the message, all that need to be found is the value of m. This can be done by rearranging the encoding equation to solve for m
move 2 to c side. it becomes m = c-2
The above answer is in response to the full question below;
Suppose M and C each represent the position number of a letter in the alphabet, but M represents the letters in the original message and C represents the letters in a secret code. The equation c=m+2 is used to encode a message.
Write an equation that can be used to decode the secret code into the original message.
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2. an insurance salesman sells policies to 10 men, all of identical age and all of whom are in good health. according to his company's records, the probability that a man of this particular age will be alive in 20 years is 0.69. find the probability that in 20 years the number of the men that are still alive will be: a) exactly five b )more than 8 c)at least two
a) The probability that exactly five men will still be alive in 20 years is approximately 0.024.
b) The probability that more than eight men will still be alive in 20 years is approximately 0.057.
c) The probability that at least two men will still be alive in 20 years is approximately 0.999.
To calculate the probabilities, we can use the binomial distribution formula, where n is the number of trials, p is the probability of success, and x is the number of successes. Therefore,
a) P(X = 5) = (10 choose 5) * (0.69)⁵ * (0.31)⁵ ≈ 0.024
b) P(X > 8) = P(X = 9) + P(X = 10) = [(10 choose 9) * (0.69)⁹ * (0.31)¹] + [(10 choose 10) * (0.69)¹⁰ * (0.31)⁰] ≈ 0.057
c) P(X ≥ 2) = 1 - P(X = 0) - P(X = 1) = 1 - [(10 choose 0) * (0.69)⁰ * (0.31)¹⁰] - [(10 choose 1) * (0.69)¹ * (0.31)⁹] ≈ 0.999
In summary, we have used the binomial distribution formula to calculate the probability that exactly five men, more than eight men, and at least two men will still be alive in 20 years, given that the probability that a man of this particular age will be alive in 20 years is 0.69.
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What are two algebraic expressions for the square root of x? (what are two ways of writing the square root of x?)
The two algebraic expressions for the square root of x are x^(1/2) and √x.
An algebraic expression is an expression built up from constant algebraic numbers, variables, and the algebraic operations (addition, subtraction, multiplication, division and exponentiation by an exponent that is a rational number).
The square root function involves the square root symbol √ (which is read as "square root of"). The square root of a number 'x' is a number 'y' such that y2 = x. i.e., if y2 = x ⇒ y = √x. i.e., if 'x' is the square of 'y' then 'y' is the square root of 'x'.
There are two common ways to write the square root of x as an algebraic expression. The first way is to use fractional exponent notation, which is x^(1/2). The second way is to use radical notation, which is √x. Both of these expressions represent the square root of x in algebraic form.
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