Strontium-90 has a half-life of about 29 years. After 65 years, about how many grams of a 25-gram sample will remain?

What is the verbal expression of 2 (x-5)

An expression is shown. What is the value of the expression? x = - 19 + 19

How to find the percent of something?

Which of the following situations involve opposite quantities combine to make 0? a. Eva has a new piggy bank. She adds 7 quarters on Wednesday and then adds another 5 quarters on Friday. b. David made lemonade.

In right triangle ABC, B=90 and cos A = 11/17. What are A and C to the nearest degree?

A solid plastic ball is a sphere with a radius of 8 inches. How much plastic does it take to make one ball

Miss Holman gave a 90-cent tip to a waitress for serving a meal costing $6.00. What percent of the bill was her tip?

You ride your bicycle at a rate of 10 mi/h. the distance d (in miles) that you ride is given by the function d=10t where t is the time in hours.

you sold two different types of wrapping paper for your band fund-raiser. One type sold for $6 a roll and the other for $8 a roll. You collected a total of $92 for the 14 rolls you sold. How many of each type of wrapping paper did you sell?

What is 14 times 1/6?