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Marat540 [252]
3 years ago
9

Simplify 5m-2(6m-5)+2a. -7m-8b. -7m+12c. 17m+12d. 17m-8

Mathematics
1 answer:
fgiga [73]3 years ago
7 0

The answer is B. -7m+12.


First distribute the -2 to 6m and -5.

5m-2(6m-5)+2

5m+(-2*6m)+(-2*-5)+2

5m+-12m+10+2


After that, combine the like terms.

5m+-12m+10+2

-5m+-12m=-7m

10+2=12


The simplified expression is -7m+12.

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Answer:

15 answers

Step-by-step explanation:

To solve this question we need to set up an equation.

Let's name the number of incorrect answers x.

<u>We can set up an equation that's essentially:</u>

(Points for correct answer)*(number of correct answers)+(points for incorrect answer)*(number of incorrect answers)=final score

When we plug in our numbers and variables it looks like this:

5(3)+(-2x)=-15

Simplify

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Divide both sides by -2

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This means Smitha attempted 15 wrong answers, and that there were 18 questions in total.

6 0
2 years ago
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katrin2010 [14]
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7 0
3 years ago
6. Solve this inequality: j/4 -8 &lt; 4.
Vaselesa [24]

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Step-by-step explanation:

Given

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6 0
3 years ago
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andreyandreev [35.5K]

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Step-by-step explanation:

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Fudgin [204]

Answer:

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6 0
3 years ago
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