1 answer:
Answer:a + b + c = 180 ( sum of angles in a triangle )
c + d = 180 ( adjacent angles are supplementary ), thus
a + b + c = c + d ( subtract c from both sides )
a + b = d
Step-by-step explanation:
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if ab= ac and bc= 9 then ba=ac so there for b and a are equivalent so ac=9
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$15
is the answer i think
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(X,y)=(15/2,25/4) thanks for all the answers
Hope you can understand the handwriting :)
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now i'm going to say i'm not 100% sure but i think its 168
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