You have 48 grams of a radioactive kind of xenon. If it's half life is 9 hours, how much will be left after 18 hours?

Roger is renting a tuxedo for prom. Once he has chosen his jacket, he must choose from three types of pants, four colors of vests, and two different styles of shoes. How many different ways can he select his attire for the prom?

A school's rectangular athletic field has a length of 125 yards and a width of 75 yards. The planning committee has decided to expand both the length and the width of the field by a certain number of yards ... say x.

3. Janae saves dimes and quarters in a jar on her dresser. Janae has 35 coins in the jar for a total of $6.50. She has 5 more quarters than dimes. How many quarters are in the jar?

Do you think that a person's age and the amount they eat each day are basically in proportion

The trigonometric ratio secant is the inverse of a sine true or false

My question is below. M/pie = 7.3

Suppose Phil and Kate decide to drive the sports car to Nashville without stopping and they want to arrive by 5:00pm. What time should they leave their house? It's takes 7 hours and 52 minutes to get to Nashville.

A local civic group is selling

The ratio of Brendas age to Jasons age is 4:5. In eight years the ratio will be 6:7. How old is brenda now

Which figure has a greater volume and by how much? 3 cm 3 cm 5 cm 5 cm 8 cm 6 cm 15 cm 15 cm Figure 1 Figure 2