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Dmitrij [34]
2 years ago
13

2

Mathematics
1 answer:
dimulka [17.4K]2 years ago
7 0

Answer:

90, B

Step-by-step explanation:

3 x 3 = 9

3 x 3 = 9

6 x 3 = 18

6 x 3 = 18

6 x 3 = 18

6 x 3 = 18

9 + 9 + 18 + 18 + 18 + 18 = 90

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Solve the system of equations<br><br> a+s=560<br><br> 8a+3s=2905
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Answer:

a=245 s=315

Step: Solve a+s=560 for a:

a+s=560

a+s=560(Add -s to both sides)

a=−s+560

Step: Substitute −s+560 for a in 8a+3s=2905:

8a+3s=2905

8(−s+560)+3s=2905

−5s+4480=2905(Simplify both sides of the equation)

−5s+4480=2905(Add -4480 to both sides)

−5s=−1575

−5s=−1575(Divide both sides by -5)

s=315

Step: Substitute 315 for s in a=−s+560:

a=−s+560

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4 0
1 year ago
Please help me!! <br> solve 31 = x + 25.5
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Answer:

x = 5.5

General Formulas and Concepts:

<u>Pre-Algebra</u>

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Step-by-step explanation:

<u>Step 1: Define</u>

31 = x + 25.5

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Subtract 25.5 on both sides:                    5.5 = x
  2. Rewrite:                                                      x = 5.5
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Step-by-step explanation:

35 : 14

Divide by 7

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We cannot divide it further so the answer is 5 : 2

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Answer:

It is 4^{5}

Step-by-step explanation:

the four is multiplied 5 times

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