the answer is 21 it really not it just I have to do this for this app that won't give me these for answers
Step-by-step explanation:
( vertically opposite angles)
Answer:
2 1/2 hours
Step-by-step explanation:quarters means 1/4 and there are 4 of them in each hours so if you have 10 quarters of a hour they add up to 2 hours and a half, because 2 hours times 4 equals 8 quarters and then add the other 2 quarters and you get half
