A40 gram sample of a substance that’s used for drug research has a k-value of 0.1472. find the substances half-life, in days. round your answer to the nearest tenth.

What is the exact area of a circle with a diameter of 50 centimeters? a.87.9 square centimeters b.379.9 square centimeters c.1962.5 square centimeters d.4923.5 square centimeters

The cost for an uberi is $2.50 plus $2.00 mile. if the total for the uber ride was $32.50, how many miles did the customer travel?

What is always true when two whole numbers are subtracted?