suppose a normal distribution has a mean of 62 and a standard deviation of four what is the probability that a data value is between 56 and 64

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?

Dean and karlene get paid to write songs. dean is paid a one-time fee of $20 plus $80 per day. karlene is paid a one-time fee of $25 plus $100 per day. write an expression to represent how much a producer will pay to hire both to work the same number of days on a song.

Olga bought a new skirt that cost $20. sales tax is 5%. how much did olga pay, including sales tax? 7.