Answer:
-8
Step-by-step explanation:
y2 - y1 / x2 - x1
-15 - 1 / 1 - (-1)
= -16 / 2
= -8
this may help you.look it once.
f
a. 77
You do 180-40-63=77
The triangles are congruent so it makes sense.
hope it helps you
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