hanglenn1
21.12.2020 •
Mathematics
A= 1/2 h(a+b) solve for b
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Ответ:
Answer and Step-by-step explanation:
Solve for b.
A =
Divide by h and multiply by 2 from both sides.
Subtract a from both sides.
Ответ:
10 in
Step-by-step explanation:
formula for perimeter:2 (l + b)
perimeter=34 in
2 ( l + 7 ) = 34
2l + 14 = 34
2l = 34 - 14
l = 20 ÷ 2
l = 10 in