The half-life of a radioactive isotope is the time it takes for a quantity of the isotope to be reduced to half its initial mass. Starting with 150 grams of a radioactive isotope, how much will be left after 3 half-lives?

A Anu and Meenu are sisters. Anu is 5 years younger than Meenu. Can you write Anu's age in terms of Meenu's age? Take Meenu's age as x years.

What is a decimal for 12/25

A company that makes hair-care products has 2,000 people try a new shampoo. Of the 2,000 people, 12 mild allergic reaction. What percent of the people had a mild allergic reaction.

Louis is saving money for a car, he invests $1,200 in an account that pays an interest rate of 7.5%. How many years will it take for the account to reach $14,000? Use formula A = p (1 + r) ^t

Evaluate the given expressions and choose the correct answer in scientific notation. (28 * 10^6) : (4 * 10^3) A. 7 * 10^3 B. 8 * 10^2 C. 7 * 10^2

Consider the following system of equations: y = - 2x + 3 y = x - 5 Which description best describes the solution to the system of equations? Lines y = - 2x + 3 and y = 3x - 5 intersect the x-axis. Line y = - 2x + 3 intersects line y = x - 5.

You purchased 8 pounds 10 ounces of candy shop you want to split it equally among 3 classrooms at a local school. How much should each classroom receive

Well Basically, it's kinda a struggle to understand this math your explaining: ( Well, 3/6 = 8/?

An employee gets paid $1,035 each week. How much money will the employee get paid for working 6 weeks? How can you use estimation to check the reasonableness of your answer?

a man divided $9000 among his wife son and daughter. the wife rectwice as much as the daughter and the son received $1000 more than the daughter. how much did each receive.