What is the radius if the Diameter 10.5?
r = 8.5
r = 5.25
r = 12.5
r = 21

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.

The weight of a radioactive isotope was 96 grams at the start of an experiment. after one hour, the weight of the isotope was half of its initial weight. after two hours, the weight of the isotope was half of its weight the previous hour. if this pattern continues, which of the following graphs represents the weight of the radioactive isotope over time? a. graph w b. graph x c. graph y d. graph z

For the right triangle shown, the lengths of two sides are given. find the third side. leave your answer in simplified, radical form.