Suppose 63 gallons of water came out of a pipe in 7minutes. What was the rate in gallons per minute?

9 gallons per minute

Step-by-step explanation:

63 divided by 7 = 9. Dividing the overall amount by time finds the rates per minute.

to double check, if 9 gallons were coming out of a pipe for 7 minutes, how much would there be?

9 times 7 = 63 gallons

∠acb = 8°

step-by-step explanation:

∠xba lies on the circle and is half the measure of the intercepted arc ax

hence

measure of arc ax = 2 × 42° = 84°

∠acb is outside the circle and is

∠acb = (arcab - arcax ), hence

∠acb = 0.5 (100 - 84) = 0.5 × 16° = 8°