The half-life of a certain radioactive element is 200 years. How will it take for a 100 pound chunk of this element to decay to a chunk that is 50 pounds?

Mary is 3 years older than Sarah. winifred is twice as old as Mary. Altogether thei ages total 89. How old is Sarah

When Aubree goes bowling, her scores are normally distributed with a mean of 190 and a standard deviation of 14. Using the empirical rule, what percentage of the games that Aubree bowls does she score between 148 and 232?

What is 0.0059 in scientific notation?

4/3 times the sum of a number and 8 is 24. What is the number

Given g (x) = 5x+5, solve for x when g (x) = 0

What is the y-intercept for y=3 (x-5) (x+4) ?

Is-54/9 an rational number?

Whats 31 divided by 45

The quotient of (x4 + 5x3 - 3x - 15) and a polynomial is (x3 - 3). What is the polynomial?

Find the unknown measure of the rectangle 9m perimeter=42 meters