How long in years, will it take for a quantity of plutonium-240 to decay to 25% of its original amount? K is the decay constant, 0.00011

There are 1320 ways for three students to win first second and third place during a debate. How many students are on debate team?

at a bargain store, Tanya bought 4 items that each cost the same amount. Tony bought 5 items that each cost the same amount, but each was 1.25 less than the items that Tanya bought. both Tanya and Tony paid the same amount of money.

What is the value of (3a^-2b^6/2a^-1b^5) ^2 when a=3 and b=-2

Solve this problem C = 4y/m+n for y

Lenora buys 3.7 pounds of potatoes that cost $0.29 per pound and 4.8 pounds of onions that cost $1.23 per pound. How much does Lenora pay in all? Round to the nearest cent

Write (x+6) (x-2) in standard form

Aaron wants to buy 2 concert tickets that cost $25.50 each. Aaron's grandfather pays him $4.25 an hour to rake leaves. How many hours does Aaron have to rake leaves to earn the total cost of the tickets?

Writes the pair of fractions with a common denominator for 3/10 and 2/5

The volume of this cylinder is 6,430.72 cubic centimeters, the height is 8 cubic centimeters. What is the radius? Use ≈ 3.14 and round your answer to the nearest hundredth.

A meteorologist predicts a 20% chance of rainfall today. Which statement describes the likeihood of rainfall today?