Here is the graph of the amount of a chemical remaining after it was first measured. The chemical decays exponentially. What is the approximate half-life of the chemical? Explain how you know.

What kinds of numbers make up the set of numbers called the real numbers? give examples when you explain a number type. there are a limited set of types of numbers, but an unlimited number of examples of these numbers.

There are 15 plates and each plate is either 7 or 12 inches diameter. which systems of equations do you use to find the number of 7 inch plates, x and 12 inch plates, y

For each proportion find the unknown number x 1/5/8=×/15