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?

Solve the equation with the replacement set { - 34,-2,2,34} { 16 - x| = 18

What is one eighth divided by three fourth

What value in the nth root of unity for any value n?.

Consider a normal distribution curve where 90-th percentile is at 20 and the 25-th percentile is at 10. use this information to find the mean, μ, and the standard deviation, σ, of the distribution.

Manuel and Peter are standing 12 ft. apart from each other and looking up at a kite that is flying between them. Manuel is flying the kite on a 65 ft. string at an angle of 70° with the ground. How far is Peter from the kite? 61.9 ft. 65.8 ft. 68.

Your macaroni and cheese recipe calls for 1 2/3 cups of milk. You're having company and you need to quadruple the recipe. How much milk will you need?

Math will give medals Which of the following are reasonable answers for the product of two negatives and a positive? 20 10 -20 -10

Ashely walks 2 1/2 miles around a lake around three times a week. If Ashley walks around the lake in 3/4 hour, what is her rate of speed? (Hint: Use the formula r = d/t, where the r is rate, d is distance, and t is time.

Solve for d. h + 4 d = 5b A) d = bh + 5 B) d = h 5b C) d = h + 4 5b D) d = h - 4 5b

Kate jump 225 times in 3 minutes