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zvonat [6]
3 years ago
5

Which of these numbers is in the solution set of x + 5 = 15? A. 10 B. 3 C. 20 D. 11

Mathematics
2 answers:
stealth61 [152]3 years ago
6 0

Answer:

A

Step-by-step explanation:

10 + 5 = 15

Alik [6]3 years ago
3 0

Answer: A

Step-by-step explanation:

x+5=15

  -5  -5

x=10

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Solution for k/5.2+81.9=47.2 equation:
<span>k in (-oo:+oo)

k/5.2+81.9 = 47.2 // - 47.2

k/5.2-47.2+81.9 = 0

0.19230769*k-47.2+81.9 = 0 // - 81.9-47.2

0.19230769*k = -(81.9-47.2) // : 0.19230769

k = (-(81.9-47.2))/0.19230769

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