pls, help I don't understand this.

The line represented by the table is:

y = 2x + 40

A general linear relationship is written as:

y = ax + b

Where a is the slope and b is the y-intercept.

If the line passes through (x₁, y₁) and (x₂, y₂) then the slope is:

a = (y₂ - y₁)/(x₂ - x₁)

We can use the first two pairs:

(6, 52) and (9, 58)

Then we will get:

a = (58 - 52)/(9 - 6)

a = 6/3 = 2

y = 2x + b

To find the value of b, we replace the values of one of the points, if we use the first one (6, 52), then we will get:

52 = 2*6 + b

52 = 12 + b

52 - 12 = b

40 = b

The line is:

y = 2x + 40

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Answer:

9

Step-by-step explanation:

Let that number be x whose 6 is two thirds. Now we need to find here the value of x .

So,

\(\underline{\boldsymbol{ According\ to \ the \ Question :- }}\)

=> x × ⅔ = 6

=> x = 6*3/2

=> x = 9

The function D represents the cost is  $175  for of x towels.

For the first 20 towels, the equation is simply 5x.

The 5 is the cost per towel ($5) times the number of towels sold up to and including 20 towels.

Replace x by 20 in given expression  we get the maximum cost

So the maximum cost of those 20 towels is $5 (20)=$100.

Looking at towels 21 and greater, the price drops to $3 each. Putting this in a formula,

Therefore we get,

3(x-20)+100

Which is $3 for the cost per towel, (x-20) since it starts with towel number 21, and +100 for the cost of the first 20 towels.

Let's try it for 45 towels using the formula

3 (45-20)+ 100

=3(25) + 100

=75+ 100

= $175

The function D represents the cost is  $175  for of x towels.

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Answer:

d

Step-by-step explanation:

edge 2022

The number of ways we can have five people line up at a checkout counter in a supermarket is 120 ways.

Since order is important, we use permutations to answer the question

These are the number of ways, x of arranging n objects. It is given by ⁿPₓ = n(n - 1)(n - 2)(n - 3)...(n - x + 1) = n!/(n - r)!

Since we have five people to be arranged in line, there are 5 people to be arranged in 5 places.

So, there are 5 places for the first person, 4 places for the second person, 3 places for the third person, 2 places for the fourth person and 1 place for the last person.

So, we number of permutations or number of ways of arranging them in line is ⁵P₅ = 5 × 4 × 3 × 2 × 1

= 120 ways

So, the number of ways we can have five people line up at a checkout counter in a supermarket is 120 ways.

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Answer:

66400

Step-by-step explanation:

the third digit is the hundredth digit, the fourth is 6, therefore rounding up, not down.

Answer:

Try C

Step-by-step explanation:

I hope that this is right

Answer:

10n=10n

Step-by-step explanation:

n-10+9n-3=10n-13

n+9n

10n-10-3=10n-13

-10-3

10n-13=10n-13

    +13        +13

10n=10n

Answer:

131˙

Step-by-step explanation:

Supplementary angles are angles that add up to 180˙. If you subtract 49 from 180, you get 131.

Brainliest? Maybe?

The height at the 45th percentile is approximately 63.75 inches.

The height at the 45th percentile, we can use the z-score formula:

z = (x - μ) / σ

where:

x is the height we want to find

μ is the population mean, which is 64 inches

σ is the population standard deviation, which is 2.0 inches

z is the z-score corresponding to the 45th percentile, which we can find using a standard normal distribution table or calculator.

The z-score corresponding to the 45th percentile, we can use the inverse normal cumulative distribution function (also called the inverse Gaussian function) with a probability of 0.45:

z = invNorm(0.45) = -0.1257 (rounded to four decimal places)

Now we can solve for x:

z = (x - μ) / σ

-0.1257 = (x - 64) / 2.0

-0.1257 × 2.0 = x - 64

-0.2514 + 64 = x

x = 63.7486

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Answer:

130 bc its the alternate exterior angle of angle D

Step-by-step explanation:

Answer:

d

Step-by-step explanation:

interior angle for triangle is 180 if you want to find it you have to find interior angle for d and then 180-70-the interior angle for d and then you will get answer for b2 and then 180-b2 and you will get 120

The amount that she make in a workweek if she sold $4,800 worth of merchandise will be $605.

A percentage is a value or ratio that may be stated as a fraction of 100. If we need to calculate a percentage of a number, we should divide it's entirety and then multiply it by 100.

Here, Mae Ling earns a weekly salary of $365 plus a 5.0% commission on sales at a gift shop.

The amount that she make in a workweek if she sold $4,800 worth of merchandise will be:

= $365 + (5% × $4800)

= $605

The amount is $605.

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Answer:

Hello! answer: 30

Step-by-step explanation:

13 × 13 = 169

5 × 5 = 25

169 - 25 = 144

12 × 12 = 144 therefore 12 is the missing leg

so we will use this to find the area so...

12 × 5 = 60 60 ÷ 2 = 30 therefore the answer is 30 hope that helps!

Answer: 0 = 0

Step-by-step explanation: there is no solution  

It would take the committee of 8 students 9 days to clean the auditorium

From the question, we have the following parameters that can be used in our computation:

6 days for a committee of 12 pupils

This means that

Rate = 6 days * 12 pupils

Evaluate

Rate = 72 day * pupils

Using the above as a guide, we have the following:

Days = Rate * Pupils

Substitute the known values in the above equation, so, we have the following representation

Days = 72/8

Evaluate

Days = 9

Hence, the number of days is 9

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To find the probability of selecting a blue shape,  the probability of selecting a blue shape from the bag of plastic shapes is 5/12 or 0.4167 (rounded to four decimal places).

To find the probability of selecting a blue shape, we need to determine the number of blue shapes selected and divide it by the total number of shapes selected. From the given data, we can see that out of the 12 shapes selected, 5 of them are blue.

Therefore, the probability of selecting a blue shape is 5/12.

In probability, the probability of an event occurring is calculated by dividing the number of favorable outcomes by the number of possible outcomes. In this case, the favorable outcome is selecting a blue shape, and the possible outcomes are the total number of shapes selected. By dividing the number of blue shapes (5) by the total number of shapes selected (12), we obtain the probability of 5/12. This means that there is approximately a 41.67% chance of selecting a blue shape from the bag of plastic shapes.

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The winners of the prizes are distributed throughout the classes as per the percentage of students in the respective group.

The total number of surveyed students is 36.

We calculate the expected number of students for each class is:

Class

Expected Frequency

Freshman

30% of 36 = 10.8

Sophomore

25% of 36 = 9

Junior

25% of 36 = 9

Senior

20% of 36 = 7.2

(b)

We set up:

H0: The number of observed winners is indifferent to the number of expected winners.

H1: The number of observed winners is not indifferent to the number of expected winners.

The Test Statistic Calculation Table:

Class Observed Frequency (fi) Expected Frequency (ei) (fi -ei )² /ei

Freshman 6                                   10.8                                 2.1333

Sophomore 14                                    9                                         2.7778

Junior         9                                    9                                           0

Senior         7                                    7.2                                0.0056

Total =        36                                    36                                    4.9167

The calculated

\(x^{2}\) = 4.9167

The p-value for 4 - 1=3 degree of freedom for the above test score is 0.177999.

(c)

Since p-value (=0.177999) >  α0..05 (standard level of significance),

H0 is failed to be rejected.

The number of observed winners is concluded to be indifferent to the number of expected winners, i.e., the winners of the prizes are distributed throughout the classes as per the percentage of students in the respective group.

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Answer:

The answer is the fourth one.

\(\frac{1}{r^7} +\frac{1}{s^12}\)

Step-by-step explanation:

The mason's assistant's pay for the job is $165.

To find the mason's assistant's pay for the job, we need to multiply the rate of pay per cubic foot by the number of cubic feet moved.

Rate of pay per cubic foot = $0.75
Number of cubic feet moved = 220

Pay for the job = $0.75 x 220 = $165

Therefore, the mason's assistant's pay for the job is $165.
The mason's assistant will earn $165 for this job.


To calculate the pay for the mason's assistant, follow these steps:

1. Determine the rate of pay per cubic foot: $0.75
2. Determine the total amount of cubic feet moved: 220 cubic feet
3. Multiply the rate of pay by the total cubic feet moved: $0.75 x 220

By multiplying the rate of pay ($0.75) by the total cubic feet moved (220), you get the total pay for the job:

$0.75 x 220 = $165


The mason's assistant will be paid $165 for moving 220 cubic feet of earth to dig the trench.

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It is unlikely that an algorithm for finding n-1 numbers such that their total equals x exists in polynomial time because the Subset Sum problem is NP-complete.

Finding a subset of n integers such that their total equals x from a given set of n-1 numbers are identical to the task at hand. Unfortunately, there is no known polynomial-time solution for solving this problem, which is also known as the Subset Sum problem and is a well-known NP-complete problem.

Consider the following reduction from the Subset Sum problem to understand why this is the case: Create a new set S' by adding a single element x to the original set S after receiving a Subset Sum problem instance consisting of a set S of n integers and a goal sum x.

Take into account the reduction from the Subset Sum problem to see why this is the case: Create a new set S' by adding a single element x to the existing set S in a case of the Subset Sum problem where the inputs are a set S of n integers and a goal sum x. Discover a subset of the n-1 items in S' that add up to x.

Therefore, It is unlikely that an algorithm for finding n-1 numbers such that their total equals x exists in polynomial time because the Subset Sum problem is NP-complete.

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To use the quadratic formula, we need to identify the values of a, b, and c.

1. In this case, the equation is 4x² - 3x - 8 = 0, so a = 4, b = -3, and c = -8.

2. x = (-b ±√(b² - 4ac))/2a.

3.  x = (3 ±√137)/8.

The Quadratic Formula is a mathematical equation used to solve second-degree equations.

To use the quadratic formula, we need to identify the values of a, b, and c in the equation ax² + bx + c = 0.

In this case, the equation is

4x² - 3x - 8 = 0,

so a = 4, b = -3, and c = -8.

Once the values of a, b, and c are known, we can substitute them into the Quadratic Formula:

x = (-b ±√(b² - 4ac))/2a.

In this equation, a = 4, b = -3, and c = -8, so the equation becomes

x = (-(-3) ±√((-3)² - 4(4)(-8)))/2(4).

Simplifying, we get x = (3 ±√(9 + 128))/8.

Finally, solving for x yields x = (3 ±√137)/8.

Therefore, the solution to the equation is

x = (3 ±√137)/8.

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Answer:

Step-by-step explanation:

There are countless different types of probability problems. In the very simplest of terms probability is the ratio of the number of specific outcomes divided by the total number of possible outcomes.

Answer:

B

Step-by-step explanation:

Consider the coordinates of a vertex , say D and D'

D (- 1, 5 ) and D' (3, 2 )

- 1 → 3 in the x- direction is + 4

5 → 2 in the y- direction is - 3

Translation rule is

(x, y ) → (x + 4, y - 3 )

Performing a change of scale we will see that the actual distance is 4 miles.

We know that the scale is:

3/4 inch = 2 miles.

And the distance that Nicole found on the map is (1 + 1/2) inches.

We can rewrrite the scale as:

1 inch = (4/3)*2 miles

1 inch = (8/3) miles.

Then the actual distance will be:

distance = (1 + 1/2) inches = (1 + 1/2)*(8/3) miles = 4 miles.

The correct option is A.

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Answer:

ok if I did this right the answer should be 675. sorry if it's wrong. I hope it's right.

Answer:

3rd row

Step-by-step explanation:

there were multiple mistakes there ngl but out of the amswers i saw it should be that brianna should habe divided

The sample size for a two-sided 80% confidence interval with a margin of error of 3.308 grams, assuming a known population variance of 53.29 grams, is 8.

This can be calculated using the formula:

n = (Z * σ / E)²

Where:

n = sample size

Z = Z-value corresponding to the desired confidence level (in this case, 80% confidence level corresponds to Z = 1.28)

σ = population standard deviation (square root of the variance, so in this case, √53.29 = 7.299)

E = margin of error

Plugging in the values:

n = (1.28 * 7.299 / 3.308)²

n = (9.33872 / 3.308)²

n = 2.824²

n = 7.968

Therefore, the sample size required is approximately 7.968. Since the sample size must be a whole number, we should round it up to 8 to ensure an adequate sample size.

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Answer: D

Step-by-step explanation:

\(f(3)=5(-3)-1=-16\\\\\\g(3)=2(-3)^{2}+1=19\\\\(f\times g)(3)=-16 \times 19=\boxed{-304}\)