Jack lives at location A(1,5) while Jill lives at location B(-3,-4) on a coordinated grid system where 1 grid square represents 1 kilometer distance. They want to meet at a
location that is the same distance from both of their homes. If Jill can walk 3km/h,
how long will she take to reach this location?
note: time=distance/speed
about 1.6 hours
about 0.6 hours
about 2.4 hours
about 0.4 hours

Solve this 364x-64x=300x and 12(x2–x–1)+13(x2–x–1)=25(x2–x–1)

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.

Add the two expressions 4.6 x -3 + -5.3 x + 9