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2 years ago

I NEED THIS FOR MY TEST ASAP!

Mathematics

1 answer:

Reptile [31]2 years ago

4 0

Answer:

-1

Step-by-step explanation:

2(.5n-3)=n-0.25(12-12n)

first you distribute whatever is on the outside of the parenthesis to the inside of the parenthesis

1n-6=n-3+3n

then you combine like terms and end up with

1n-6=-3+4n

add 6 to each side to get

n=3+4n

subtract 4n from each side to get

-3n=3

divide -3 from each side to get

n=-1

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Take west to be the positive direction. The height of a sloped roof above the place where you stand is 12

den301095 [7]

Given:

Take west to be the positive direction. The height of a sloped roof above the place where you stand is 12 feet. If you move 3 feet west, the height is 10 feet.

We need to determine the slope.

Let x denote the standing place.

Let y denote the height.

Writing the given as coordinates, we get;

(0,12) and (3,10)

Slope:

The slope can be determined using the formula,

$m=\frac{y_2-y_1}{x_2-x_1}$

Substituting the coordinates (0,12) and (3,10), we have;

$m=\frac{10-12}{3-0}$

$m=\frac{-2}{3}$

Thus, the slope is $m=-\frac{2}{3}$

7 0

3 years ago

For an analysis of variance, if the between-group estimate of the population variance is 30, and the within-group estimate is 25

borishaifa [10]

Answer:

1.2

Step-by-step explanation:

We have given the variance between - group estimate is = 30

And the variance within - group estimate is =25

Now we have to calculate the F ratio

F ratio is defined as the ratio of variance between the group and variance within the group

So F ratio $=\frac{30}{25}=1.2$

So for the given variance F ratio will be 1.2

8 0

2 years ago

What is the length of ef in the right triangle below?

katrin2010 [14]

Answer: A

Step-by-step explanation:

Using pythagoras;

$25 = \sqrt{7^{2}+ x^{2} }\\25^{2}=7^{2} +x^{2} \\625 = 49 +x^{2} \\576 = x^{2} \\x = 24$

Please give me a brainliest answer

3 0

2 years ago

Read 2 more answers

Find the area of the figure. PLS I NEED HELP FAST!

Rom4ik [11]

55 ft

base + base2 / 2 x h

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2 years ago

What is the formula to find the circumference of a circle using the radius?

Greeley [361]

Answer:

c = 2 *pie* r

Step-by-step explanation:

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2 years ago