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3 years ago

5

What is 7-4x +2 (5x+8) if x= -2 with work plsssss

1 answer:

Maslowich3 years ago

7 0

<span><span>7−<span>4x</span></span>+<span>2<span>(<span><span><span>(5)</span><span>(2)</span></span>+8</span>)</span></span></span><span>=<span><span><span>7+</span>−<span>4x</span></span>+36</span></span>Combine Like Terms:<span>=<span><span>7+<span>−<span>4x</span></span></span>+36</span></span><span>=<span><span>(<span>−<span>4x</span></span>)</span>+<span>(<span>7+36</span>)</span></span></span><span>=<span><span>−<span>4x</span></span>+43</span></span>Answer:<span>=<span><span>−<span>4x</span></span>+<span>43</span></span></span>

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The perimeter of a rectangle is 108 inches. the rectangle is 34 inches long. how wide is it?

mixer [17]

$\frac{108 - 34 - 34}{2}$
= 20 inches

In a rectangle, there are 2 similar length measurements & 2 similar width measurements

7 0

4 years ago

Someone answer the whole thing fast plz

Brilliant_brown [7]

Answer:

y = 2x + 54

Step-by-step explanation:

slope of equation:

(y2-y1)/(x2-x1)

= (72-58)/(9-2)

= 14/7

= 2

y = 2x + b

58 = 2(2) + b

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3 years ago

A = 100(1+r)^4<br> Expand the right of this formula.<br> appreciate your help with an explanation

suter [353]

Answer:

100r^4 + 400r^3 + 600r^2 + 400r + 100

Step-by-step explanation:

Expanding ( r + 1 )^4 gives :-

r^4 + 4r^3 + 6r^2 + 4r + 1

So multiplying 100 with r^4 + 4r^3 + 6r^2 + 4r + 1 gives :-

100r^4 + 400r^3 + 600r^2 + 400r + 100

4 0

3 years ago

Jacob painted 3/4 of a wall his little brother painted 1/2 of what was left how much of the wall is still unpainted

Leni [432]

Lets do this step by step:

1 wall = 1 whole or $\frac{1}{1}$
Jacob painted $\frac{3}{4}$ of the wall
$\frac{1}{1} - \frac{3}{4} = \frac{1}{4}$ (because $\frac{3}{4}$ is a quarter of 1 whole)
His little brother painted $\frac{1}{2}$ of the wall
$\frac{1}{4}-\frac{1}{2} =$
Find the common denominator which is 4:
1/4 × 1 = 1/4 and 1/2 × 2 = 2/4
$= \frac{1}{2}$ (because a half of 1/4 is 1/2)

Therefore your answer is "1/2."

Hope this helps!

Nonportrit

8 0

3 years ago

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Flauer [41]

Answer:

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Step-by-step explanation:

<u><em>The correct question is</em></u>

Using her garden hose, Camilla filled up a 4-gallon bucket in just

1 /6 of a minute. At what rate does water flow through the hose?

we know that

To find out at what rate the water is flowing through the hose, divide the volume of the bucket by the time in minutes

so

$4\ gal:\frac{1}{6}\ min=24\ \frac{gal}{min}$

6 0

3 years ago