Company alpha can produce 500 desks in 3 days while company beta can produce 700 desks in 4 days. if the two companies join forces, how many days would it take them to produce 3000 desks?
about 7 days
about 9 days
about 11 days
about 13 days
pump 1 can empty a pool in 5 hours while pump 2 can empty the same pool in 9 hours. if the two pumps were to work together, how long would it take them to empty the pool? about 3 hours
about 3 hours and 15 minutes
about 3 hours and 30 minutes
about 3 hours and 45 minutes

Which equation shows the variable terms isolated on one side and the constant terms isolated on the other side for the equation -1/2x+3=4-1/4x? a. -1/4x=1 b. -3/4x=1 c. 7=1/4x d. 7=3/4x

What is the cube root of -1,000p^12q3? -10p^4 -10p^4q 10p^4 10p^4q

An engineer is going to redesign an ejection seat for an airplane. the seat was designed for pilots weighing between 120 lb and 161 lb. the new population of pilots has normally distributed weights with a mean of 125 lb and a standard deviation of 28.1 lb. a)if a pilot is randomly selected, find the probability that his weight is between 120 lb and 161 lb. the probability is approximately? b. if 36 different pilots are randomly selected, find the probability that their mean weight is between 120 lb and 161 lb. the probability is approximately? c. when redesigning the ejection seat, which probability is more relevant? . part (b) because the seat performance for a single pilot is more important. b. part (b) because the seat performance for a sample of pilots is more important. c. part (a) because the seat performance for a sample of pilots is more important. d. part (a) because the seat performance for a single pilot is more important.