johan6 johan6
  • 16-02-2017
  • Mathematics
contestada

I need to know number 8 but I just can't

I need to know number 8 but I just cant class=

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texaschic101
texaschic101 texaschic101
  • 16-02-2017
P = 2a + b
P = 16.75
a = 5x + 5
b = x + 4

16.75 = 2(5x + 5) + (x + 4)
16.75 = 10x + 10 + x + 4
16.75 = 11x + 14
16.75 - 14 = 11x
2.75 = 11x
2.75/11 = x
0.25 = x <==
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