X is a normally distributed random variable with mean 46 and standard deviation 22. What is the probability that X is between 2 and 90?

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.

Which point-slope form equation represents a line that passes through (3,-2) with a slope of -4/5

Astudent drew a circle and two secant segment. he concluded that if pq ~= ps, then qr ~= st. do you agree with the student’s conclusion? why or why not?