In an experiment, we are measuring the following random variable: speed of vehicles as they pass a certain highway segment. It appears that this variable follows a normal probability distribution with the following properties: N(72, 42.25). What is the probability that a randomly selected vehicle on this highway segment is traveling at a speed of 80 mph or more? a. 11%
b. 8%
c. 20%
d. 13%
e. 25%
f. 22%
g. 17%
h. 5%

The diameter of a ball is 8 in. what is the volume of the ball? use 3.14 for pi. enter your answer as a decimal in the box. round only your final answer to the nearest hundredth.

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')

Is there a direction u in which the rate of change of f(x,y)equals=x squared minus 3 xy plus 4 y squaredx2−3xy+4y2 at p(1,2) equals 14? give reasons for your answer. choose the correct answer below. a. no. the given rate of change is smaller than the minimum rate of change. b. no. the given rate of change is larger than the maximum rate of change. c. yes. the given rate of change is larger than the minimum rate of change and smaller than the maximum rate of change.