There is a model boat race at local lake. a boat finished the first 2/5 mile at an average speed of 1/3 mile per minute. the boat still has 3/10 mile left to go and continues at the same speed. which equation can be used to find the boat's total race time from start to finish? a. 1/3x = 3/10 - 2/5
b. 1/3x = 2/5 + 3/10
c. 1/3x = 3/10 - 2/5
d. 1/3x = 2/5 + 3/10

Asphere has a diameter of 10 in. what is the volume of the sphere?

The krasnapolski is a top-of-the-line hotel in amsterdam, the netherlands. among their many services, they rent bicycles to guests. the bicycle checkout is open 24 hours per day 7 days per week and has 50 bicycles on hand. on average, 10 guests request a bicycle each day, arriving completely randomly at all times of the day during the spring and summer seasons. guests keep bicycles for four days on average, with a standard deviation of two days. how long does a guest on average have to wait for a bike? a. approximately 24 hours b. approximately 0.033 hours c. approximately 4 days d. approximately 47 minutes

*let m∠cob = 50°30’, m∠aob = 70° and m∠aoc = 20°30’. could point c be in the interior of ∠aob? why?