If 40% of a radioactive substance remains after 20 years, what is the half-life of the substance?

Identify the property shown. 6 • w = w • 6 A. transitive B. associative C. commutative D. distributive

Is a maximum increasing Or decreasing

When ratios have the same units we call that ratio?

Keith earns $44.00 in 3 hours. How much would he earn in 10 hours? A. $117.33 B. $146.67 C. $141.67 D. $88.00

Gregory has scored 91, 76, and 84 on the first three exams in his math class. If the standard 70,80,90 scale is used for grades of C, B, and A, and the exams are equally weighted, what is the minimum he can score on the final exam in order to: a)

It is estimated that each guest at a party will eat 2/9 pounds of chocolates. How many guest can be served with 6 pounds of chocolate?

Joel finished the race in 8.04 seconds. Ray finished the race in 8.40 seconds. Which statement is true? Ray had the faster time. Joel and Ray finished the race in the same amount of time. Joel had the faster time.

Hello umm stuff is cool i also like ice cream and chips.

Find the mode for the given data set. Stem Leaves 1 6,8 2 3,5,6 3 4,7,7 4 0,1,6

Anna tossed 3 coins in the air. What is the probability that exactly 2 of the coins show heads? Look back at all of the possible outcomes from #2 and use that to find your probability. Write the probability as a fraction. Simplify, if needed.