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marissa [1.9K]
3 years ago
11

A and B are supplementary angles. If m A = (x + 15)° and m

Mathematics
1 answer:
scoray [572]3 years ago
3 0

Answer:

76 degrees

Step-by-step explanation:

We know that supplementary angles equal 180 degrees. So, set up the equations:

180=(x+15)+(x-13)\\

180=(2x+2)\\

178=2x

x=89\\

Then, you just plug 89 back into ZB, and simplify:

(89-13)\\

=76

So, the measurement of angle ZB is 76 degrees.

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