3peak101
30.08.2021 •
Mathematics
Làm phép chia: (
+ 2x + 1) : (x + 1)
Solved
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Ответ:
A. multiply by 1/2
Step-by-step explanation:
A = 1/2 bh
We want to isolate b
We could divide each side by 1/2
A / 1/2 = 1/2 bh / 1/2
2A = bh
We could divide by h
A/h = 1/2bh/h
A/h = 1/2 b
We could divide by 1/2h
A / (1/2h) = 1/2 bh /(1/2h)
2A/h = b
We do not want to multiply by 1/2
1/2A = 1/2* 1/2bh
1/2A = 1/4bh
This does not help isolate b