A radioactive substance decays exponentially. A scientist begins with 100 milligrams of a radioactive substance. After 27 hours, 50 mg of the substance remains. How many milligrams will remain after 36 hours?

The following expression is an example of which property of real numbers? (-2) + 7 = 7 + (-2) additive identity associative property commutative property multiplicative property

A pollster agency wants to estimate the proportion of citizens of the European Union who support same-sex unions. She claims that if the sample size is large enough, she does not need to worry about the method of selecting the sample.

Is 7/8 closer to 0,1,2, or 3

1. On Tuesday, 12 Kittens at the shelter were adopted and 4 dogs also found new homes. What percentage of the newly adopted pets at the shelter were dogs? 2. Gabe read 10 books over the summer. 4 were nonfiction. The rest were fiction.

Given Event A, Event B, and Event C. Event A and Event B are mutually exclusive. Event A and Event C are not mutually exclusive. P (A) = 0.45 P (B) = 0.35 P (C) = 0.25 What is the probability of the complement of Event A? A) 1.00 B) 0.55 C) 0.

The jelly Junior high school color is made by mixing red paint with yellow paint the ratio of red plate two yellow is 3 to 5 how much red plate should be mixed with 20 ounces of yellow

Two angles are complementary. one angles measure is 79 degrees. What is the measure of the other angle

True or false? The degree of a binomial is always equal to 2

Given two-digit numbers 10, 13,16, 17 and 20. How many remaining two-digit numbers smaller than 22?

What is the nearest ten thousand, the population of Vermont was estimated to be about 620,000 in 2008. What might have been the exact population of Vermont in 2008