A factory requires 84 machines to produce a given number of articles in 32 days. How many machines would be required to produce the same number of articles in 21 days?

Calculate the average of 766 and 876

Amanda has an unknown amount of balloons, 3 of them fly away, and has 8 balloons remaining. Write an equation to show how many balloons she started out with.

Write the equation of the line with slope - 4/3 and y-intercept 2 in slope intercept form.

The base of a triangle is 3 cm longer than its altitude. The area of the triangle is 35cm^2. Find the altitude. (Hint: use the area of a triangle. 1/2 * base * altitude.)

Is the square root of 81 a rational number and a integer

10m is equal to less than or greater than 1km

In mrs. romano's math class of 25 students, 8 of the the students play a musical instrument. What percent of the class plays a musical instrument

Edoardo thinks of a number between one and 20 that has exactly 5 factors what number is he thinking of?

Can be expressed as the sum u=v+w, where v satisfies the initial conditions

A box of 100 computer chips contains eight defective chips. suppose we selected a random sample of 10 chips from that box. find the probability that the sample had: a. at least one defective chip b. all defective chips c. nine defective chips d.