The radioisotope cobalt-60 is used in cancer therapy. the half-life isotope is 5.27 years. which is equation determines the percent of an initial isotope remaining after t years?

9=2q t 1 What does q=

You read in an article that the cost for gas in Japan is 137.64 Yen per Liter. Convert this to Dollars per Gallon so that you can compare this cost to the cost of gas in the US $1 US = 119.33 Yen and 1 gallon = 3.

How much does a frog weigh in grams

Translate the sentence into an equation. The sum of 4 times a number and 6 is 5. Use the variable y for the unknown number.

How do you find a product by factoring the tens

What does irrational mean?

Calvin took his friends to a movie for his birthday. The movie tickets cost $12 per person. He spent less than $180. If x is the number of friends he took along, then the inequality that represents the situation is.

Which of the following is a step in evaluating: ∫ cos2 5x dx

A container in the shape of a cone has a height measuring 2.4 feet tall with a diameter measuring 0.8 foot wide. The liquid in the cone will be poured into a cylinder that is the same height but with a diameter that is twice as large.

What is the simplified expression for - 2a2b + a2 - 5ab + 3ab2 - b2 + 2 (a2b + 2ab) ?