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svlad2 [7]
4 years ago
5

Simplify the expression: 7 - 7(5 + x) - 9x Your answer

Mathematics
1 answer:
Gekata [30.6K]4 years ago
5 0

Answer:

-16x-28

Step-by-step explanation:

Break it into little pieces; start with distributing the -7:

-7(5+x)

-35-7x

Now add the rest of the problem: 7-35-7x-9x

Combine like terms: 7-35               7x-9x

7-35=-28             7x-9x=-16x

Rearrange so the coefficient and variable are upfront, giving you:

-16x-28

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3 years ago
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A line contains the points M (-2,5) and N (2,0) what is the slope of MN. A-7/2 B -2/7. C -4/5 D -5/4
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Answer:

Step-by-step explanation:

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3 years ago
Points L, M, and N are collinear.
Natali5045456 [20]
<h3>Answer:</h3>

33

<h3>Step-by-step explanation:</h3>

Vocabulary

Before going into an explanation, let's go over some important vocabulary.

  • Collinear - Collinear describes points that are on the same line. This means that there is 1 line with the 3 points L, M, and N.
  • Segment addition postulate - The segment addition postulate states that if there are 2 collinear points (A and C) with another point in between them (B), then the statement AB + BC = AC must be true.

Solving for MN

Using the postulate above we can make a new equation. First, let's set up an equation that mirrors the postulate.

  • LM + LN = MN

Now, let's plug in the values we know.

  • 13 + 20 = MN

Then, solve.

  • 33 = MN

This proves that a possible value of MN is 33.

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2 years ago
Erica can read 1620 pages in 12 days. How mant pages can he read in one day
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