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wlad13 [49]
3 years ago
13

Which expression is equivalent to -9a-10-6a+7−9a−10−6a+7

Mathematics
1 answer:
Gwar [14]3 years ago
6 0

Answer:

−30a−6

Step-by-step explanation:

Let's simplify step-by-step.

−9a−10−6a+7−9a−10−6a+7

=−9a+−10+−6a+7+−9a+−10+−6a+7

Combine Like Terms:

=−9a+−10+−6a+7+−9a+−10+−6a+7

=(−9a+−6a+−9a+−6a)+(−10+7+−10+7)

=−30a+−6

BRAINLIEST. if you don't mind.

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3 years ago
What is the solution of the matrix equation?
katrin [286]

Hello from MrBillDoesMath!

Answer:

The first choice ( -12, 20)



Discussion:

Using matrix multiplication we find the equations:


1x  + 1y = 8                     (A)

2x  + 3y = 36                   (B)


Next, compute

  2(A) - B  =>

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Substituting this y value in (A) gives

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The answer is the first choice ( -12, 20)


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Step-by-step explanation:

given

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