Is - 4.7 a rational number?

The number of plastic straws produced by a machine varies directly as the amount of time the machine is operating. If the machine produces 20,000 straws in 8 hours, how many straws can it produce in 50 hours?

There are 30 students in a class that took a test. The average grade of 10 students was 80. The other 20 students average was 89. What is the overall average for all 30 students?

What lies on a sphere and divides the sphere into two hemispheres? A). great circle B). radius C). center D). diameter

Han has 10 cubes, each 5 inches on a side. A) Find the total volume of Han's cubes. Express your answer as an expression using an exponent. B) Find the total surface area of Han's cubes. Express your answer as an expression using an exponent.

Rouns thia number to the nearest thousand 1,995,298

Which is greater or equal to 8/10 or 63/100

Which expression has the least value? A. 3 (33) B. 0 31-33) C. 0-31-33) D. 3 (3-3)

Which set of data contains two outliers

The area of Jamaica is 6460 square miles less than the area of Haiti. Write and solve an equation to find the area of Haiti.

Give two square roots are used to estimate square root of 8