Answer:
6mm
Step-by-step explanation:
Answer:
46 miles per hour
Step-by-step explanation:
ِAn hour has 60 minutes. In 60 minutes, there is four 15 minutes (4*15 = 60).
So, if it travelled 11.5 miles in 15 minutes, in an hour, it travelled 11.5 * 4 = 46 miles per hour.

We're given that
and
, and want to find
.
By the chain rule, we have

and


Then

(because the point
corresponds to
)

It would be Answer A) x>6
Answer: 9/20
Step-by-step explanation: