krissychele
krissychele krissychele
  • 07-08-2018
  • Mathematics
contestada

Can someone help me figure out 43-45!please

Can someone help me figure out 4345please class=

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lesliekolleroxrkcf
lesliekolleroxrkcf lesliekolleroxrkcf
  • 07-08-2018
43) ang 1 = ang 2
5x = 9(x-4)
5x = 9x - 36
4x = 36
x = 9. so ang 1 + ang 2 = 90°

44) ang 1 +ang 2 + ang 3 = 180
60 + 7x+1 + 9x+7 = 180
16x = 112
x = 7
so angle 2 is 7*7+1= 50°
angle 3 is 9*7+7= 70°

45) let ang 2=x, then ang 1 is 3x
then 3x+x=96
4x = 96
x=24
angle 2 is 24° and angle 1 is 72°

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