dyshekagraves
20.01.2021 •
Mathematics
Which expression is equivalent to 2 (3/4n+8+1/4n-12)?
a. 2n+8
b.2n-8
c.2n+10
d.n-4
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Ответ:
b. 2n-8
Reason
Distribute the 2.
6/4n +16 + 2/4n -24
Simplify
6/4n + 2/4n = 8/4n = 2n
16 - 24= -8
Then you get 2n-8
Ответ:
a = 9.4 cm, b = 12.0
Step-by-step explanation:
Just use Pythagoras theorem