A sample contains 400 Plutonium-244 atoms. After 1 half-life (s) how many plutonium atoms are left on average?

What is the solution to - 8 = - (x+4)

A group of preschoolers has 8boys and 24 girls. What is the ratio of girls to all children

James wants to tile his floor while using tiles in the shape of a trapezoid. To make the pattern a little more interesting he has decided to cut the tiles in half along the median.

George wants to check the math on his July electric bill. His air conditioner uses 1.5 kilowatts of electricity per hour and the electric company charges $0.17 per kilowatt hour.

The area of a figure is the number of units it takes to cover the figure

A number is shown in word form. "Three hundred thirteen thousand, one-hundred sixty" What is the number in expanded form?

2.80=9 (70) / I. I need a answer for i

What is the answer to f (x) = √x-3

Suppose that 13 inches of wire costs 65 cents. At the same rate, how much (in cents) will 27 inches of wire costs.

In right ∆ABC, m B = 90°, m C = 40°, and BC = 10. What are the other two side lengths of the triangle?