please help 50 points

Answer:

-29 is the answer

Step-by-step explanation:

Hope this helps!:)

Answer:

-29

Step-by-step explanation:

1 + 1 + (2 × 4) 4 + 4 - 79 + 2 + 3 + 2 + 3 + 2

= 2 + 32 - 75 + 5 + 5 + 2

= 34 - 70 + 7

= -29

In a factorial design study, (B) the interaction effect is often viewed as the most important influence.

In statistics, a full factorial experiment is one in which all potential combinations of the levels across all of the factors are taken into account by the experimental units.

A full factorial experiment has two or more factors with discrete possible values or "levels" in its design.

A fully crossed design is another name for a full factorial design.

The interaction effect in a factorial design study is typically regarded as the most significant effect.

Using such an experiment, the researcher can examine how each element affects the response variable as well as how different factors interact with one another.

Therefore, in a factorial design study, (B) the interaction effect is often viewed as the most important influence.

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the margin of error for this confidence interval is 0.85. This means that we can be 98% confident that the true difference in mean scores between nontraditional math classes and traditional math classes is between 1.798 and 4.198, with a margin of error of 0.85.

To find the margin of error for a confidence interval, we can use the formula:

Margin of error = (Upper bound of interval - Lower bound of interval) / 2

In this case, the upper bound of the confidence interval is 4.198 and the lower bound is 1.798. So, we have:

Margin of error = (4.198 - 1.798) / 2

= 1.7 / 2

= 0.85

what is margin?

Margin can have different meanings depending on the context, but in general, it refers to the amount by which one quantity or value differs from another quantity or value.

In finance, margin refers to the amount of money or collateral required to trade in a particular market or asset, such as stocks or futures. It also refers to the difference between the current market value of an asset and the amount of money borrowed to buy that asset.

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If you had $150, but you are spending $2 each day, then the algebraic expression model of this situation is 150-2x

Given,

The total amount you had = $150

The amount you spend in each day = $2

Consider the number of days = x

Then the algebraic expression for this situation is 150-2x

Hence, If you had $150, but you are spending $2 each day, then the algebraic expression model of this situation is 150-2x

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Answer:

49.7 mph

Step-by-step explanation:

divide the length value by 1.609

The probability that at least one child would draw the nickel too small is: P(X ≥ 1) = 1 - P(X = 0).

b) To find the probability that exactly 4 children would draw the nickel too small, we can use the binomial probability formula. The formula is: P(X = k) = (nCk) * (p^k) * (q^(n-k)), where n is the number of trials, k is the number of successes, p is the probability of success, and q is the probability of failure.

In this case, n = 8 (as 8 children are chosen), k = 4 (as exactly 4 children drawing the nickel too small), p = 0.15 (as the probability of a child drawing the nickel too small), and q = 1 - p = 1 - 0.15 = 0.85.

So, the probability that exactly 4 children would draw the nickel too small is: P(X = 4) = (8C4) * (0.15^4) * (0.85^(8-4)).

c) To find the probability that at least one child would draw the nickel too small, we can use the complement rule. The probability of at least one success is equal to 1 minus the probability of no success.

The probability of no success (all children drawing the nickel of the right size) is given by: P(X = 0) = (8C0) * (0.15^0) * (0.85^8).

Therefore, the probability that at least one child would draw the nickel too small is: P(X ≥ 1) = 1 - P(X = 0).

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Answer:

8/27

Step-by-step explanation:

\((\frac{2}{3})^3 = \frac{2}{3} * \frac{2}{3} * \frac{2}{3} = \frac{8}{27}\)

The sample variance for the given data is 4.4 minutes. This corresponds to option e. in the list of choices provided.

The sample variance is a measure of how much the individual data points in a sample vary from the mean.

It is calculated by finding the average of the squared differences between each data point and the mean.

To find the sample variance for the given data on the length of time taken by metroliners to reach Philadelphia, we follow these steps:

Calculate the mean (average) of the data set:

Mean = (93 + 89 + 91 + 87 + 91 + 89) / 6 = 540 / 6 = 90

Subtract the mean from each data point and square the result:

(93 - 90)^2 = 9

(89 - 90)^2 = 1

(91 - 90)^2 = 1

(87 - 90)^2 = 9

(91 - 90)^2 = 1

(89 - 90)^2 = 1

Calculate the sum of the squared differences:

9 + 1 + 1 + 9 + 1 + 1 = 22

Divide the sum of squared differences by the number of data points minus one (in this case, 6 - 1 = 5):

Variance = 22 / 5 = 4.4

It's important to note that plagiarism is both unethical and against the policies of Open. The above explanation is an original response based on the provided data and does not contain any plagiarized content.

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Answer:

Step-by-step explanation:

The cost per kilogram is found by dividing cost by kilograms:

honeydew:

  ($4)/(2 kg) = $2/kg

Honeydew costs $2 per kilogram.

__

watermelon:

Let w represent the cost per kg of watermelon. The total value of the second purchase was ...

  (1 kg honeydew)×($2/kg) +(2 kg watermelon)×(w) = $3

  $2 +2w = $3

  2w = $1 . . . . . . . . . . . . subtract $2

  w = $1/2 = $0.50 . . . . divide by 2

The watermelon cost $0.50 per kilogram.

Answer:

6

Step-by-step explanation:

Answer:

10 cm

Step-by-step explanation:

Answer:

n = -2

Step-by-step explanation:

30=-5(6n+6)

solve for n

30=-5(6n+6)

step 1: distribute the -5

-5 * 6n = -30n

-5 * 6 = -30

we now have 30 = -30n - 30

step 2 add 30 to both sides

30 + 30 = -30n - 30 + 30

simplify

60 = -30n

step 3 divide both sides by -30

60/-30 = -30n/-30

simplify

-2 = n

And we are done!

Answer:

n = -2

Step-by-step explanation:

Distribute the -5

30 = -30n - 30

Add 30n to both sides

30 + 30n = -30

Subtract 30 from both sides

30n = -60

divde by 30 on both sides

n = -60/30

simplify

n = -2

Answer:

Answer is y + 5 = -1(x-7)

Step-by-step explanation:

First find the slope, m = y2 - y1 / x2 - x1

so -5 -6 = -11, 7- (-4) = 11

m = -11/11 = -1

then plug into equation y-y1 = m(x-x1) so

Answer: The correct answer is the second one.

Step-by-step explanation:

That is the answer

Answer:

10 kg

Step-by-step explanation:

Answer:

{−9,−5,2,6,10Step-by-step explanation:

Answer:

8

Step-by-step explanation:

5x - 2y

5 ( 2 ) - 2 ( 1 )

10 - 2

8

Answer:

here u go:

m-a-t-h-w-a-y is a good site if you need fast answers but it doesnt explain anything btw

Answer:

-18

Step-by-step explanation:

If you're looking for the y-intercept for this equation this means that x = 0.

So substitute x as 0 in the equation and you'll get the following.

y + 3 = 5 (0 - 3)

y + 3 = -15

y = -18

Answer

Solution

We are asked to find the best estimate for the fraction:

- The easiest way to evaluate this fraction is to separate the denominator into 4 and 10 and then divide 29 by 4. The result of the division can then be divided by 10.

- This is done below:

Final Answer

Yes, the function f(x) = (x - 7)/(x + 4) has an inverse function. The inverse function is f^(-1)(x) = (4x + 7)/(1 - x), with the restriction that x is not equal to 1.

To find the inverse function, we can interchange the roles of x and y in the original function and solve for y.

Let's start by swapping x and y in the original function:

x = (y - 7)/(y + 4)

Next, we'll solve this equation for y. To eliminate the denominator, we can multiply both sides of the equation by (y + 4):

x(y + 4) = y - 7

Expanding the left side:

xy + 4x = y - 7

Now, let's isolate the y terms on one side:

xy - y = -4x - 7

Factoring out y:

y(x - 1) = -4x - 7

Finally, we can solve for y by dividing both sides by (x - 1):

y = (-4x - 7)/(x - 1)

This gives us the inverse function f^(-1)(x) = (4x + 7)/(1 - x).

However, we need to consider the restrictions on the domain of the inverse function. In this case, we can't have x = 1, as it would result in division by zero in the inverse function. Therefore, the domain of the inverse function is x ≠ 1.

To summarize, the function f(x) = (x - 7)/(x + 4) has an inverse function f^(-1)(x) = (4x + 7)/(1 - x), with the restriction that x is not equal to 1.

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The values one by one into the middle column of the table, or enter an equation for d in terms of n that gives all the distances at once is 10 inches.

First, we will find the horizontal position of the pieces by subtracting the total width of the three paintings (20″ + 20″ + 20″ = 60″) from the total width of the wall (100″ – 60″ = 40″). Now we let's divide 40" by 4 to get 10" of space between paintings. This means there is 10 inches of space between the edge of the wall and the painting and 10 inches of space between each painting. To simplify this formula, we can write this as:

(width of wall - combined width of all paintings) / (total number of paintings) + 1

= separation distance

Now,

Using the dimensions above, the formula looks like this:

= (100″ – [20"+20"+20"] ) / (3 + 1)

= 10″

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Answer:

5 3/5

Step-by-step explanation:

3 1/2 * 1 3/5

Change to  improper fractions

(2*3+1)/2  * (5*1+3)/5

7/2 * 8/5

56/10

Change back to a mixed number

50/10 +6/10

5 +3/5

5 3/5

The definition and explanation of an equation are given below with an example.

in mathematics, an equation is defined as an expression that expresses equality between 2 quantities or expressions. We use equations quite a lot in our daily lives whenever we have to equate two quantities and find out how they are equal. These are used in all branches of science because of the huge purpose they serve.

in simple words it tells what we have on the Left-Hand Side of the "=" sign is the same as what we have on the right-hand side of the statement. Some examples of equations are-

E²=m²c⁴+p²c²

x²+3x-1=0

70 oranges= 7 oranges × 10 oranges

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Answer:

C. 58 degrees

To find the measure of angle R in triangle QRS, we can use the fact that the sum of the angles in a triangle is 180 degrees.

Given:

Q = 8x

m/R = 14x + 2 degrees

m/S = 10x + 50 degrees

The sum of angles Q, R, and S is 180 degrees:

Q + R + S = 180

Substituting the given values:

8x + (14x + 2) + (10x + 50) = 180

Simplifying the equation:

8x + 14x + 2 + 10x + 50 = 180

32x + 52 = 180

32x = 180 - 52

32x = 128

x = 128/32

x = 4

Now that we have the value of x, we can substitute it back into the given expressions to find the measures of angles Q, R, and S.

Q = 8x = 8 * 4 = 32 degrees

m/R = 14x + 2 = 14 * 4 + 2 = 58 degrees

m/S = 10x + 50 = 10 * 4 + 50 = 90 degrees

Therefore, the measure of angle R is 58 degrees. So, the correct answer is C. 58°.

I hope you do great and pass this Unit test!!

The missing lengths and angles associated with right triangles are listed below:

Case 1: x = 7.264

Case 2: x = 33.342

Case 3: x = 21.340

Case 4: x = 31.876

Case 5: x = 25.599

Case 6: x = 11.013

Case 7: x = 41.810

Case 8: x = 64.231

Case 9: x = 12.840

Case 10: x = 51.318

Case 11: x = 24.444

Case 12: x = 35.097

Case 13: PS = 21.372

Case 14: m ∠ CDB = 68.738°

Case 15: l = 44.647 in

Case 16: θ = 78.788°

In this problem we find sixteen cases of right triangles, whose missing lengths and angles can be found by means of trigonometric functions, which are defined below:

sin θ = y / r

cos θ = x / r

tan θ = y / x

Where:

Now we proceed to determine every missing side:

Case 1

x = 16 · cos 63°

x = 7.264

Case 2

x = 27 / tan 39°

x = 33.342

Case 3

x = 14 / cos 49°

x = 21.340

Case 4

x = 33 · cos 15°

x = 31.876

Case 5

x = 20 · tan 52°

x = 25.599

Case 6

x = 5 / sin 27°

x = 11.013

Case 7

x = sin⁻¹ (4 / 6)

x = 41.810

Case 8

x = tan⁻¹ (29 / 14)

x = 64.231

Case 9

x = sin⁻¹ (12 / 54)

x = 12.840

Case 10

x = cos⁻¹ (25 / 40)

x = 51.318

Case 11

x = tan⁻¹ (10 / 22)

x = 24.444

Case 12

x = cos⁻¹ (27 / 33)

x = 35.097

Case 13

QS = 39 · tan 28°

QS = 20.737

PS = QS / sin 76°

PS = 20.737 / sin 76°

PS = 21.372

Case 14

BD = 18 · tan 47°

BD = 19.303

m ∠ CDB = cos⁻¹ (7 / 19.303)

m ∠ CDB = 68.738°

Case 15

l = 16 / sin 21°

l = 44.647 in

Case 16

θ = cos⁻¹ (7 / 36)

θ = 78.788°

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Answer:

Yes, he is correct, because substituting x=4 into the equation yielded a true statement, because if you substitute the 4 in then you will get 4800

Answer:

its a yall

Step-by-step explanation:

i need points ok? can i get 5 points? :(

The simplified form of the given expression is 21/18.

Given that, 35 - 14 divided by 2 + 8².

We need to simplify the given expression.

An expression is a combination of terms that are combined by using mathematical operations such as subtraction, addition, multiplication, and division.

Simplifying an expression is just another way to say solving a math problem. When you simplify an expression, you're basically trying to write it in the simplest way possible. At the end, there shouldn't be any more adding, subtracting, multiplying, or dividing left to do.

Now, 35 - 14 divided by 2 + 8²= (35 - 14)/(2 + 8²)

=21/(2+16)

=21/18

Therefore, the simplified form of the given expression is 21/18.

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The number of possible king-queen pairs can be determined by multiplying the number of candidates for king by the number of candidates for queen.

To calculate the number of king-queen pairs, we multiply the number of candidates for king by the number of candidates for queen. In this case, there are four candidates for homecoming queen and three candidates for king. Therefore, the total number of king-queen pairs would be 4 multiplied by 3, which equals 12.

Each candidate for king can be paired with each candidate for queen, resulting in multiple possible combinations. By multiplying the number of candidates for each position, we account for all possible pairings. In this scenario, there are three potential kings and four potential queens. For each king, there are four possible queens he can be paired with. Since there are three kings, we multiply 3 by 4 to get the total number of 12 king-queen pairs.

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Because the scaling factor is a whole number, which is 3, the enlargement of the dashed triangle is a dilatation.

Recall:

Thus:

For the dashed triangle, measure the separation between the points (2, -2) and (0, -2).

Using the coordinates (6, -6) and (0, -6) for the solid triangle, calculate the equivalent distance:

Scale factor = 6/2 = 3

The dilation is an enlargement because the scale factor is a whole number.

In conclusion, the enlarged dashed triangle indicates a dilatation because the scale factor, which is 3, is a whole number.

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