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Kazeer [188]
3 years ago
12

A number is decreased by seven. Then, the new number is multiplied by 3 to get an answer of -9.

Mathematics
2 answers:
erastovalidia [21]3 years ago
5 0

Answer:

C: 4

Step-by-step explanation:

You call the number x. Then you do (x-7) * 3= -9.

3x-21=-9

3x=12

x=4

Nataly [62]3 years ago
5 0

Answer:

C.) 4

Step-by-step explanation:

Let's try all of the answer choices to see what we get.

-30 - 7 = -37

-37 × 3 = -111

Okay, so we can rule A out. Let's try the next one.

30 - 7 = 23

23 × 3 = 69

We can rule B out too. Let's move on.

4 - 7 = -3

-3 × 3 = -9

We worked it out and we got -9,, we're going to check the last one to be sure.

-4 - 7 = -11

-11 × 3 = -33

Now we are sure the answer is C.

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<img src="https://tex.z-dn.net/?f=4x%2B6%3D11" id="TexFormula1" title="4x+6=11" alt="4x+6=11" align="absmiddle" class="latex-for
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Read 2 more answers
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