Answer:
1 hour and 17 minutes and 7 sec
Step-by-step explanation:
.
We're given the hypotenuse and the opposite side so that means that we're gonna be using the inverse of sine to find the angle.


For number 7 the answer should be 20%. 10 is 50% and the other 6 is 30%.
Answers are
there are four ways to choose the committee
there are three ways to form the committee if person D must be on it
if person B and C must be on the committee, there are two ways to form the committee