Find the z value such that the area under the standard normal distribution curve between 0 and the z value is 0.2123.

do i do it on a graph?

step-by-step explanation:

1/2*qr*rs

step-by-step explanation:

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.