Area = (a+b/2)h
a and b means base
(3+8/2)x7=38.5 I’m not very sure about my answer sorry if it’s wrong
Answer:
B
Step-by-step explanation:
Answer: The Answer is C
I just took the test
Step-by-step explanation:
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multiply second equation by 2 and rewrite
4a + 6b = 10
4a - 8b = 24
subtract equations
0 + 14b = -14
14b = -14
b = -1
sub back into 4a + 6b = 10 to find the value of a
4a + 6 (-1) = 10
4a - 6 = 10
4a = 16
a = 4
therefore, 12a = 12×4
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