Joe has five dollar bills and ten dollar bills in his wallet. He has 7 bills in his wallet for a total of $55. How many of each type of bill does he have?

Find 4x - y - 2z if x = - 2, y = 3, and z = - 2

A typical stone on the lowest level of the great pyramid in Egypt was a rectangular prism 5 feet long by 5 feet high by 6 feet deep and weighed 15 tons what was the volume of the average stone how much did one cubic foot of this stone weigh

What is the percentage of 2/3

What is the true solution to 3 l n 2 + l n 8 = 2 l n (4 x)

10. The convention center has 18 pianos. Each piano has 88 piano keys. What is the total number of piano keys?

Use the matrix method to solve: x + 4y8 2x+y 9

Harley is loading 625 bagsof cement onto small pallets. Each pallet holds 5 bags. How many pallets will harley need?

Simplify the expression. (2x5) 4 2x20 16x20 16x9 2x625

43/14 as a decimal rounded to nearest tenth

Evaluate the summation of 25 times 0.3 to the n plus 1 power, from n equals 2 to 10.