What is the GCF of 21 and 42

Calculate the surface area of a solid box in the shape of a cube with side length 10cm

A regulation softball has a circumference of 12 inches. what is the volume of the softball?

In a certain chemical reaction, a substance is converted into another substance at a rate proportional to the square of the amount of the first substance present at any time t.

Find all the solutions of sec theta - 2 = 0. It says use "or" as necessary and gives an example of kpi.

Half a cup is 4 grams. How many grams will it be if it was 2 1/4?

A local store owner pays her employees time and a half for overtime. That means for every hour an employee works more than 40 hours per week, the store will pay 1.5 times the regular hourly wage of $8.50.

Factor the expression. 5x + 15 The factored expression is

Factor: x2 - 14x = - 48

If c (5,5) and d (7,3), then what is the length of CD? Round to the nearest tenth

Which ordered pair is a solution of y = x + 4? A (0,0) B (5,54) C (7,28) D (9,13)