My brain isn't functioning tonight help, please

Answer:

y= ½x+9

Step-by-step explanation:

Use desmos makes it easier

Answer:

x = 8

Step-by-step explanation:

This question is pretty simple. You already know the value of x, we substitute what x equals and find the number 2 cubed.

2^3 = ?

2x2x2 = 8

Answer:

D

Step-by-step explanation:

Reflection across the x axis

This is your answer because it is reflection on the x axis

Hope this helps u :)

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The transformation shown from Triangle P to Triangle Q is Translation.

A transformation  is a general term for four specific ways to manipulate the shape and/or position of a point, a line, or geometric figure.

Given that,  Triangle P is transformed to Triangle Q.

The transformation shown is a translation transformation, because in a translation transformation, all the points in the object are moved in a straight line in the same direction.

Hence, The transformation shown from Triangle P to Triangle Q is Translation.

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Answer:

log (1/6)

Step-by-step explanation:

Using the property that log a - log b = log(a/b), we get that log 4 - log 24 = log(4/24) = log (1/6)

I hope this helps! :)

a. The distribution of X is:

X 1 2 3 4 5 6

P 1/36 1/6 2/9 1/2 8/9 1/36

b. P(X ≤ 3) =  5/12.

c. The expected value of X is 91/36.

a. To find the distribution of X, we can consider all possible outcomes of rolling two dice and determine the probability of each outcome for X = 1, X = 2, X = 3, X = 4, X = 5, and X = 6.

For X = 1, both dice must show a 1, which has probability 1/36.

For X = 2, one die shows a 2 and the other shows a number less than 2, which has probability (1/6)(1/2) = 1/12. There are two ways this can happen, so the total probability is 2/12 = 1/6.

For X = 3, one die shows a 3 and the other shows a number less than 3, which has probability (1/6)(2/6) = 1/18. There are four ways this can happen (the other die can show a 1, 2, 3, or 4), so the total probability is 4/18 = 2/9.

For X = 4, one die shows a 4 and the other shows a number less than 4, which has probability (1/6)(3/6) = 1/12. There are six ways this can happen, so the total probability is 6/12 = 1/2.

For X = 5, one die shows a 5 and the other shows a number less than 5, which has probability (1/6)(4/6) = 1/9. There are eight ways this can happen, so the total probability is 8/9.

For X = 6, both dice must show a 6, which has probability 1/36.

Therefore, the distribution of X is:

X 1 2 3 4 5 6

P 1/36 1/6 2/9 1/2 8/9 1/36

b. To find P(X < 3), we can sum the probabilities for X = 1 and X = 2:

P(X < 3) = P(X = 1) + P(X = 2) = 1/36 + 1/6 = 7/36

To find P(X = 3), we can use the probability for X = 3 from part a:

P(X = 3) = 2/9

Therefore, P(X ≤ 3) = P(X < 3) + P(X = 3) = 7/36 + 2/9 = 5/12.

c. To find E(X), we can use the formula:

E(X) = Σxi P(X = xi)

where xi are the possible values of X and P(X = xi) are their respective probabilities. From the distribution of X in part a, we have:

E(X) = (1/36)(1) + (1/6)(2) + (2/9)(3) + (1/2)(4) + (8/9)(5) + (1/36)(6) = 91/36

Therefore, the expected value of X is 91/36.

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Number of adults = x - (number of boys + number of girls) = 60

Let's assume the total number of people at the talent show is "x".

According to the question, 1/4 of them are boys, which means (1/4)x boys are present.

Also, it is given that 1/2 of them are girls, which means (1/2)x girls are present.

The rest of them are adults, so we can say that the number of adults is:

x - [(1/4)x + (1/2)x] = x - (3/4)x = (1/4)x

Now, it is given that the number of girls is 60 more than the number of adults, so we can write:

(1/2)x = (1/4)x + 60

Solving this equation, we get:

(1/2)x - (1/4)x = 60

(1/4)x = 60

x = 240

Therefore, there are a total of 240 people at the talent show.

Number of boys = (1/4)x = (1/4) * 240 = 60

Number of girls = (1/2)x = (1/2) * 240 = 120

Number of adults = x - (number of boys + number of girls) = 240 - (60 + 120) = 60

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Answer:

true

a^4.a^5=a^9

base same then power should be added

a^4+5

a^9

Answer:

x = 9 cm

create proportional equation:

\(\sf \dfrac{9}{3x-20} = \dfrac{72+9}{3x-20+56}\)

\(\sf \dfrac{9}{3x-20} = \dfrac{81}{3x+36}\)

\(\sf 9(3x+36) = 81(3x-20)\)

\(\sf 27x+324 = 243x-1620\)

\(\sf 27x-243x=-1620-324\)

\(\sf -216x=-1944\)

\(\sf x = 9\)

Answer:

Step-by-step explanation:

Since parallel lines cut the transversals proportionally, we can set the following equation and solve for x;

hello

the answer to the question is:

EB² = AB² + AE² ----> EB² = 8² + 9² = 64 + 81 = 145

----> EB = 12

945 divided by 9 = 105.

What is divided?

In mathematics, division is the process of dividing a number into equal parts and calculating the maximum number of equal parts that may be formed. For instance, dividing 15 by 3 results in the division of 15 into 3 groups of 5 each. The division sign, ",÷" or occasionally "/," is used in computer code.

If the sum of the digits is not divisible by 9, then 945 is not divisible by 9.

The sum of the digits is calculated as follows:

9 + 4 + 5 = 18

18 is divisible by 9

\(\frac{945}{9}$$\)

Write the problem in long division format

\(9 \longdiv { 9 4 5 }\)

Divide 9 by 9 to get 1

\($$\begin{gathered}91 \\\frac{1}{945} \\\frac{9}{04}\end{gathered}$$\)

Divide 4 by 9 to get 0

\($$\begin{gathered}910 \\\frac{10}{945} \\\frac{0}{45}\end{gathered}$$\)

Divide 45 by 9 to get 5

\($$\begin{gathered}9105 \\\frac{9}{045} \\\underline{4} \\\frac{45}{0}\end{gathered}$$\)

The solution for Long Division of \($\frac{945}{9}$\) is 105

105

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Answer:

3rd Option: ∠CAB

Step-by-step explanation:

To name an angle, you must follow the line segments accordingly.

Answer:

The angle name is CAB

Step-by-step explanation:

The name can't be B, since that's only one point of the angle. CBA is not in the order given on the picture, ABC is also not in the correct order. CAB is in the correct order. This could also be seen as BAC; even though it is "backwards" from the other correct answer, all the points are listed in order.

The intervals where x is decreasing are (-∞, -1) and (1, +∞).

To determine the intervals where x is decreasing, we need to analyze the sign of the derivative of the function f(x) = -3x^2 - 6x + 45. The derivative of f(x) with respect to x is f'(x) = -6x - 6.

To find the critical points, we set f'(x) = 0 and solve for x:

-6x - 6 = 0

-6x = 6

x = -1

We now consider the sign of f'(x) in different intervals:

For x < -1, we can choose x = -2 as a test value. Plugging it into f'(x), we have:

f'(-2) = -6(-2) - 6 = 12 - 6 = 6 (positive)

For x between -1 and 1, we can choose x = 0 as a test value. Plugging it into f'(x), we have:

f'(0) = -6(0) - 6 = -6 (negative)

For x > 1, we can choose x = 2 as a test value. Plugging it into f'(x), we have:

f'(2) = -6(2) - 6 = -12 - 6 = -18 (negative)

From the sign analysis, we conclude that f'(x) is positive for x < -1, negative for -1 < x < 1, and negative for x > 1. Therefore, the intervals where x is decreasing are (-∞, -1) and (1, +∞).

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Answer:

{-12,12}

Step-by-step explanation:

-|-x| = -12 multiply both sides by -1

|-x| = 12 apply rule for solving absolute value equations

-x = 12 and -x = -12 solve

x = -12 and x =12

The difference in the values of the two cars when they are each 7 years old is equal to $6,000.

In order to determine the difference in the values of the two cars, we would have to write an equation that models the price of the cars after a length of time, by using the data points shown in the graph above.

Mathematically, the slope of any straight line can be calculated by using this formula;

Slope, m = (Change in y-axis, Δy)/(Change in x-axis, Δx)

Slope, m = (y₂ - y₁)/(x₂ - x₁)

For Car A, we have:

Slope, m = (y₂ - y₁)/(x₂ - x₁)

Slope, m = (9 - 12)/(4 - 2)

Slope, m = -3/2

Slope, m = -1.5

At point (4, 9), a linear equation for car's value can be calculated by using the point-slope form:

y - y₁ = m(x - x₁)

Where:

Substituting the given points into the formula, we have;

y - y₁ = m(x - x₁)

y - 9 = -1.5(x - 4)

y = -1.5x + 15

In 7 seven years, the value of Car A is given by:

y = -1.5x + 15

y = -1.5(7) + 15

y = $4,500

Note: The negative sign indicates that the value of the car is depreciating.

For Car B, we have:

Slope, m = (y₂ - y₁)/(x₂ - x₁)

Slope, m = (10 - 18)/(5 - 1)

Slope, m = -8/4

Slope, m = -2

At point (5, 1), a linear equation for car's value can be calculated by using the point-slope form:

y - y₁ = m(x - x₁)

y - 1 = -2(x - 5)

y = -2x + 11

In 7 seven years, the value of Car B is given by:

y = -2x + 11

y = -2(7) + 3.5

y = $10,500

Now, we can determine the difference as follows:

Difference = $10,500 - $4,500

Difference = $6,000.

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\(\color{teal}{{\sf \pmb{────────────────────────}}}\)

Use Multiplication.

\( \small \sf \: \: \: \: \: = 32 \times 68 \\ \small \sf = \color {lightgreen} \pmb { 2176}\)

The total cost of paving is 2176.

\(\color{teal}{{\sf \pmb{────────────────────────}}}\)

\( \small \sf \pmb \: \color{gray}{-ItzCamero}\)

Answer:

68×32 =2176.

68÷32= 2.125

Answer:

B is 61
C is61

Step-by-step explanation:

180-119= 61

This is because of a linear pair.

The other angle is congruent to that angle.

The transmission speed of the circuit cannot be calculated without knowing the number of channels. The formula requires the number of channels in addition to the number of samples per second and the number of bits per sample.

We can use the following formula to calculate the transmission speed of the circuit.

Bandwidth = (Number of samples per second) × (Number of bits per sample)

Transmission speed = Bandwidth × Number of channels.

The given number of bits per sample is 16 and the number of samples taken each second is 8000.

Transmission speed = Bandwidth × Number of channels

Transmission speed = (Number of samples per second) × (Number of bits per sample) × Number of channels

The transmission speed on the circuit is calculated by multiplying the number of samples per second by the number of bits per sample and the number of channels.

However, the number of channels is not provided. So, we cannot calculate the transmission speed of the circuit.

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Step-by-step explanation:

1.Get the equation in the form y = ax2 + bx + c.

2.Calculate -b / 2a. This is the x-coordinate of the vertex.

3.To find the y-coordinate of the vertex, simply plug the value of -b / 2a into the equation for x and solve for y. This is the y-coordinate of the vertex.

Answer:

7

Step-by-step explanation:

The common ratio of the geometric sequence is 7.

Geometric Progression (GP) is a type of sequence where each succeeding term is produced by multiplying each preceding term by a fixed number, which is called a common ratio. This progression is also known as a geometric sequence of numbers that follow a pattern.

According to the question,

First term = a = 5

Third term = a×r²

                 = 245

⇒ ar² = 245

⇒ 5×r² =245

⇒ r² = 245/5

⇒ r² = 49

⇒ r = 7.

Hence the common ratio = 7

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After computing a confidence interval, the user believes the results are meaningless because the width of the interval is too large, the best recommendation is c. Increase the sample size.

A confidence interval is a range of estimates for an unknown parameter in frequentist statistics. A confidence interval is calculated at a specific confidence level; the 95% confidence level is the most commonly used, but other levels, such as 90% or 99%, are also used.

Confidence intervals are used by statisticians to quantify uncertainty in a sample variable. A researcher, for example, may randomly select different samples from the same population and compute a confidence interval for each sample to determine how well it may represent the true value of the population variable. The resulting datasets are all unique, with some intervals containing the true population parameter and others not.

In this case, the sample size should be increased when the results are meaningless because the width of the interval is too large.

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Complete questions

After computing a confidence interval, the user believes the results are meaningless because the width of the interval is too large. Which one of the following is the best recommendation?

a. Increase the level of confidence for the interval

b. Decrease the sample size

c. Increase the sample size

d. Reduce the population variance

16  is the approximate interquartile range (iqr) of the ages .

What does IQR, or interquartile range, mean?

The spread of the middle half of your data is measured by the interquartile range (IQR). The IQR shows the difference between the lowest and highest readings for that particular week. The spread in the center of the data for that week is roughly represented by the IQR.

                       It is the range for your sample's middle 50%. To evaluate the variability where the majority of your results are located, use the IQR. Larger values suggest a wider dispersion of the central component of your data. The first quartile (Q1) and third quartile (Q3) of these values (Q3). What separates Q3 from Q1 is known as the IQR.

IQR  = Q3 - Q1

       = 20 - 4

       = 16

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Answer: 21-4√5

Step-by-step explanation:

The height of the 10th bounce of the ball will be 0.6 feet.

A geometric sequence is a sequence in which each term is found by multiplying the preceding term by the same value.

The nth term of the geometric sequence is given by

\(\sf T_n=ar^{n-1}\)

Where,

According to the given question.

During the first bounce, height of the ball from the ground, a = 4.5 feet

And, the each successive bounce is 73% of the previous bounce's height.

So,

During the second bounce, the height of ball from the ground

\(\sf = 73\% \ of \ 10\)

\(=\dfrac{73}{100}(10)\)

\(\sf = 0.73 \times 10\)

\(\sf = 7.3 \ feet\)

During the third bounce, the height of ball from the ground

\(\sf = 73\% \ of \ 7.3\)

\(=\dfrac{73}{100}(7.3)\)

\(\sf = 5.33 \ feet\)

Like this we will obtain a geometric sequence 7.3, 5.33, 3.11, 2.23,...

And the common ratio of the geometric sequence is 0.73

Therefore,

The sixth term of the geometric sequence is given by

\(\sf T_{10}=10(0.73)^{10-1\)

\(\sf T_{10}=10(0.73)^{9\)

\(\sf T_{10}=10(0.059)\)

\(\sf T_{10}=0.59\thickapprox0.6 \ feet\)

Hence, the height of the 10th bounce of the ball will be 0.6 feet.

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Answer:

15

Step-by-step explanation:

5 X 10 = 50

170 / 50 = 3 sets  = 15

The blue line represents rise and red line run.

The slope of the line is 3/7.

Given,

The graph.

The rise and the run are terms used to describe changes in height between two points. Rise divided by Run is what determines the slope: slope =rise/  run . By examining the rise and run, you can infer the slope of a line from its graph.

We have to find the line representing rise and the line representing run of the line. And also slope of the line.

Here,

Blue line in 3 grids represents rise.

Red line in 7 grids represents run.

Now,

Slope of the line = rise / run

Slope of the line = 3/7.

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The probability that at least one of the randomly selected 5 people has been vaccinated is 0.9502.

The probability of at least one vaccinated person from a population where 51% of people are vaccinated and 5 people are chosen randomly is calculated as follows:Since the probability of a person who has been vaccinated is 51%, and the probability of a person who has not been vaccinated is 49%, the probability of at least one person being vaccinated from 5 people who are selected randomly is given by the formula:P(at least one vaccinated person) = 1 - P(no vaccinated person)The probability of no vaccinated person is calculated as follows: P(no vaccinated person) = 0.49 × 0.49 × 0.49 × 0.49 × 0.49 = 0.0498

The probability of at least one vaccinated person is calculated as follows:P(at least one vaccinated person) = 1 - P(no vaccinated person)P(at least one vaccinated person) = 1 - 0.0498P(at least one vaccinated person) = 0.9502Therefore, the probability that at least one of the randomly selected 5 people has been vaccinated is 0.9502.

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Answer:

r = -6 cos(θ)

Step-by-step explanation:

got it right on edge

The equation (x + 3)² + y² = 9 into polar form is r = -6 cos(θ). The correct answer would be option (A).

The polar form of a complex number is given by r(cos(θ) + i sin(θ)), where r is the distance from the origin and θ is the angle formed by the point and the positive x-axis.

To convert the equation (x + 3)² + y² = 9 into polar form, we can complete the square on the x and y terms:

(x + 3)² + y² = (x² + 6x + 9) + y² = 9

Then we can express x and y in terms of r and θ:

x = r cos(θ) , y = r sin(θ)

Substituting these values into the equation and simplifying:

r² cos²(θ) + 6r cos(θ) + r² sin²(θ) = 9

r²(cos²(θ) + sin²(θ)) + 6r cos(θ) = 0

r² + 6r cos(θ) = 0

r(r + 6cos(θ)) = 0

Since r ≠ 0

So, the polar form of the equation is:

r = -6cos(θ)

Thus, the correct answer would be an option (A).

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Answer:6

Step-by-step explanation:

Answer:

$2.25

Step-by-step explanation:

5 lbs = $11.25

The unit price in this context means the price of a 1-pound bag of dog food so you would divide $11.25 by 5:

$11.25 ÷ 5 = $2.25

Hope this helps!

Answer:

2.25 ($) per pound

Step-by-step explanation:                                                                               11.25 /  5 = 2.25 per pound   Alternative workings we simply divide by 10  to find   11.25 / 10  = 1.125 then multiply by 2                                                      1.125 * 2  = 2.25 ($) per pound

The news program surveyed 562 participants on their opinion on the verdict, and the variable measured was their opinion, which is a categorical variable. The statistic used to summarize this variable was 82%.

a. The variable measured on each participant in the survey is the opinion on the verdict, which is a categorical variable. The news program could use the statistic of 82% to summarize the variable, which indicates that 82% of participants said that they were unhappy with the verdict. The news program could also use a graph, such as a bar graph, to visualize the results of the survey.

b. The null hypothesis for this test is that three-quarters or less of U.S. adults are opposed to the verdict, and the alternative hypothesis is that more than three-quarters of U.S. adults are opposed to the verdict. The value of the statistic is 0.82, which represents the percentage of participants who said that they were unhappy with the verdict. This statistic can be calculated by dividing the number of participants who were unhappy with the verdict (462) by the total number of participants (562), and multiplying the result by 100.

Therefore, 0.82 = (462/562)*100 = 82%.

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