A scientist begins with 100 mg of a radioactive substance. After 6 days, it has decayed to 60 mg. How long after the process began will it take to decay to 10 mg?

Which of the following explains expressions are equivalent to - 5/6 / -1/3

What is 121.6% as a decimal?

What is the total cost of a video game if the regular price is $100 and the sales tax is 10%? a. $115 c. $110 b. $109 d. $105

Paul travel to the lake and back. The trip took 3 hours and the trip back took 4 hours He averaged 10 mph faster on the trip there than on the return trip. What was Paul's average speed on the outbound trip

9. Find the area of the right triangle with height of 3 2/3 feet and a base of 2 feet.

Which of the following is not a factor of 4x2 - 4x2y - 16x + 16xy? A. x + 4 B. x - 4 C. 4x D. 1 - y

The oil tank is leaking at a rate of 1.2 oz per mile driven. You drove 15 miles over to your grandmas house. how many cups of oil did your car leak

How many real numbers solutions are there in the equation? 0=-3x^2+x-4?

Cual es la diferencia 4/7 y 1/3

Mark draws one card from a standard deck of 52. he receives $ 0.45 for a club, $ 0.55 for an ace and $ 0.75 for the ace of clubs. how much should he pay for one draw?