bella350
bella350 bella350
  • 11-04-2018
  • Mathematics
contestada

They want us toSolve for x

They want us toSolve for x class=

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musiclover10045
musiclover10045 musiclover10045
  • 11-04-2018
the 3 inside angles of a triangle need to equal 180

you have 80 +60 = 140

so 51+x has to equal 180-140 or 40 degrees

51+x = 40

subtract 51 from each side
x = 40 - 51
x = -11
Answer Link
Astute
Astute Astute
  • 11-04-2018
Just add up all 60 + 80 + 51 = 191.

191 - (-11) = 180 which is the number we would want to get.

(-11) would then because your answer as we do 180 + (-11) it would equal the sum of 191 which would be all the angles together.

Your answer: = (-11)
Answer Link

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