kiaracorrea0414 kiaracorrea0414
  • 15-10-2020
  • Mathematics
contestada

Twice the difference of a number and 7 is at least 18

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25justinhanna
25justinhanna 25justinhanna
  • 15-10-2020

Answer: n=16

Step-by-step explanation:2(n-7) = 18  

n - 7 = 9  

+7    +7

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sarafrahman99
sarafrahman99 sarafrahman99
  • 15-10-2020

Answer:

2(x-7) ≥ 18

2x - 7 ≥ 18

     +7    +7

2x ≥ 25

2       2

x ≥ 12.5

Check

2((12.5) -7) ≥ 18

2(5.5) ≥ 18

11 ≥ 18

I think this works

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