loveguukie
loveguukie loveguukie
  • 24-01-2020
  • Mathematics
contestada

I need help on that, please and thank you.​

I need help on that please and thank you class=

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juliagraham2006
juliagraham2006 juliagraham2006
  • 24-01-2020
it’s number three. have a good day. :)
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josshyaby
josshyaby josshyaby
  • 24-01-2020

Answer:

X = 180 - (31 + 40)

Step-by-step explanation:

X + 31° + 40° = 180° { angle on a straight line is 180°}

Collecting like terms

X = 180° - 31° - 40°

X = 180° - (31° + 40°)

X = 180° - 71°

X = 109°

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