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

300 is 10 times as much as or one tenth

What is the difference between dividing a whole number by a unit fraction (ex 3 ➗1/2) and dividing a unit fraction by a whole number (Ex: 1/2➗3) ?

What is - 3 the sum of 5

An object of mass 100 kg is released from rest from a boat into the water and allowed to sink. While gravity is pulling the object down, a buoyancy force of StartFraction 1 Over 50 EndFraction times the weight of the object is pushing the object up

There are 3 cows 2 of them are brown and 1 is white. They all get fed the same amount. What is the farmers name?

UNIT RATE what is the unit rate of the of (3 ounces every 3/4 cup)

The principal P is borrowed at a simple interest rate r for a period of time t. Find the simple interest owed for the use of the money. Assume 360 days in a year. P=$1000 r=2% t=1 year

Congratulations! You won the Very Special Lottery. You have your choice of prizes. You can take $1,000,000 at 1% interest that is compounded annually for 20 years. Or, you can take $200,000 at 10% interest that is compounded daily for 20 years.

Solve for n. 18 = 2|-n| Write your answers as integers or as proper or improper fractions in simplest form. n = or n =

George can box 36 packs of 12 doughnuts, per hour. What is George's rate for 720 doughnuts?