Answer:

Step-by-step explanation:
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Given:

---------->>>>
Collect like terms.

---------->>>>
Simplify

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Hope this is helpful.
Answer:
1. -10
2. -11
Step-by-step explanation:
I don’t know I’m only in 7th grade but 56
Answer:
268.08
Step-by-step explanation:
first you take your radius and put it in the equation V=4/3πr³ when you insert the 4 you calculate it to get 268.08257
Answer:
perpendicular
Step-by-step explanation: