Answer:
your answer is 3 this is a simple equation type this into to brainly next time it will give you the answer
I think the answer is A.CMIIW
I think it is 4.5 miles per hour
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Answer:
Steps shown below
Step-by-step explanation:
We will simplify this using definitions and identities. Let's start.

Using
, we have:

Using
, we have:

Hence, proved.