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2 years ago

8

X-5-z use x=-6 and z=3

1 answer:

Vinil7 [7]2 years ago

3 0

-2........................

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-10x - 135 = 117 + 2x<br> A. 25<br> B. -18<br> C. -21<br> D. 22 <br> Helps pls

Lina20 [59]

Answer:

C

Step-by-step explanation:

Add 10x to both sides:

-10x - 135 = 117 + 2x

-10x - 135 + 10x = 117 + 2x + 10x

-135 = 117 + 12x

Subtract 117 from both sides:

-135 - 117 = 117 + 12x - 117

-252 = 12x

Divide both sides by 12:

$\frac{-252}{12} = \frac{12x}{12}$

-21 = x

So the answer is C.

Hope this helps!

6 0

2 years ago

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Margo’s Dad offers to give her 5 cents on sunday. Then for each day of the week, he offers to give her 5 times the amount from t

goblinko [34]

Answer:

Step-by-step explanation:

First you need to do 5x5=25

6 0

2 years ago

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Rob is saving to buy a new MP3 player. For every $15 he earns babysitting, he saves $9. On Saturday, Rob earned $60 babysitting.

alexandr402 [8]

$60 ÷ $15 = 4
$9 × 4 = $36
he saved $36 when he earned $60

8 0

2 years ago

What algebraic expression is equivalent to this expression?<br> 9(2x+6) - 18

Svet_ta [14]

Answer:

18x+36

Step-by-step explanation:

9(2x+6) - 18

Distribute

9*2x + 9 *6 -18

18x +54 -18

Combine like terms

18x+36

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2 years ago

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Factor completely, then place the answer in the proper location on the grid. 21a^2- 57a+30

aev [14]

Answer:

(a^2 - 10)(3+7)

Step-by-step explanation:

6 0

2 years ago