ayanamae ayanamae
  • 16-08-2017
  • Mathematics
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Forgot how to it needing help??

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wikk
wikk wikk
  • 16-08-2017
18.
AC = 39
This means that AB + BC = AC
2x - 8 + x + 17 = 39
3x + 9 = 39
3x = 30
x = 10
Then, insert the x into both AB and BC.
AC = 2(10) - 8
AC = 20 - 8
AC = 12
BC = (10) + 17
BC = 27

19.
DG = 60
4x - 3 + 2x + 21 = 60
6x + 18 = 60
6x = 42
x = 7
DO = 4(7) - 3
DO = 28 - 3
DO = 25
OG = 2(7) + 21
OG = 14 + 21
OG = 35
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