If 50 * a = 50, then what is the value of 50 - a?

Two numbers are said to be 'relatively prime' if their greatest common factor is 1. How many integers greater than 10 and less than 30 are relatively prime with 28? a. 6 integers b. 4 integers c. 8 integers d. 9 integers

Emily worked 4/5 of her normal 40 hr week if she makes 18 million per hour how much money did she earn for the week

Consider the system of equations: 3x - 4y = 12 2x + 6y = 18 Choose all of the equations that could be used when solving this system by substitution. x = 9 - 3y y = 18 - 3x y = 3x + 3 x = 4 3 y + 4

Determine the slope of the line that is perpendicular to the line y = - 7x - 12.

Find the percent change from 30to 39

Mr. Smith bought 5 movie tickets. The total cost was $38.75. How much did each ticket cost?

There are 32 marbles in a jar. 12 of the marbles are red, and the rest of the marbles are blue. What is the ratio of red marbles to blue marbles in the jar?

What number would you put in a matrix to represent a term that is missing in the original equation?

The sales tax in the town where Amanda lives is 7%. Amanda paid $35 in sales tax on a new stereo. What was the price of the stereo?

1/15y^9 For the result to be equivalent to the original expression, can it be defined at y=0?