Find the area of the regular polygon with the given apothem a and side length s. pentagon, a = 16.5 cm, s = 24 cm
The area is ___ cm sq
(Round to three decimal places as needed.)

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?

How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?

The value of the expression 16-^3/4 8 1/8 -6 6 1/40 1/64