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vlabodo [156]
3 years ago
12

Simplify: (x2+6x+8) + (-4x2+11x-9)

Mathematics
1 answer:
disa [49]3 years ago
8 0

Answer:

-3x^2+17x-1

Step-by-step explanation:

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What is 3/4 minus 3/8 in simplest form
Maslowich
Go to cymath and type it in and it will work it out for you and tell you the answer
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Drew is making a dart board.
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The answer to the question is C.
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The length of a rectangle is five times its width.
Vera_Pavlovna [14]

Answer:

72

Step-by-step explanation:

l = 5w

A = l*w

180 = 5w *w

180 = 5w^2

Divide each side by 5

180/5 = 5w^2 /5

36 = w^2

Taking the square root of each side

sqrt(36) = sqrt(w)^2

6 =w

l = 5w = 5*6 = 30

The perimeter is

P = 2(l+w)

P = 2(6+30) = 2(36) = 72

4 0
3 years ago
Marc wants to guess how many marbles are in a box that has a height of 18 inches. He calculates that there are 32 marbles in a h
Rainbow [258]

So every 5 inches in height, there are 32 marbles. You want to know how many marbles there are per 18 inches in height.

\frac{32}{5} = \frac{x}{18}

To get from 5 to 18, you multiply by 3.6.

Do the same thing to the numerator; 32 × 3.6 = 115.2.

Since 0.2 marbles is no marbles, you round down.

There are 115 marbles in the box.

♡ Hope this helps! ♡

❀ 0ranges ❀

8 0
3 years ago
Subtract (6x² + 8x - 5) from (7x? + 8x - 4)
vampirchik [111]

Answer:

−6x^2+7x+1

Step-by-step explanation:

1)(7x+8x-4)=15x−4

2)15x-4-(6x^2+8x-5)=−6x2+7x+1

8 0
2 years ago
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