4 years ago

Find the value of z.

Mathematics

1 answer:

Inessa05 [86]4 years ago

8 0

Answer:

A. 121

Step-by-step explanation:

The sum of the exterior angles is 360°, so you have ...

z + (z +10) + (z -13) = 360

3z -3 = 360 . . . . . collect terms

z -1 = 120 . . . . . . . divide by 3

z = 121 . . . . . . . . . add 1

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