Two car washers, Lydia and Jackie, are working on your car. Lydia can complete the work in 2 hours, while Jackie can complete the work in 1 hour. How many hours do the car washers take if they work together?

Which algebraic expression is equivalent to the expression below? 9 (2x - 6) A. 9x - 3 B. 18x - 54 C. 9x - 8

A group of school in New England participated in a 2 month study and reported 3962 dead animal what way should I represent this

Jessica decides to mix grades of gasoline in her truck. She puts in 7 gallons of regular and 6 gallons of premium for a total cost of $28.96. If premium gasoline costs $0.19 more per gallon than regular, what was the price of each grade of gasoline?

Which of the following expression is equal to - x^2-4

Solve by doing distributive property and then combining like terms 8 plus 9x plus 4 (11-2x)

The number of hours it takes Jack to drive from Boston to Bangor is inversely proportional to his average driving speed. When he drives at an average speed of 40 miles per hour, it takes him 6 hours for the trip.

What is 7 7/15 as a mixed number? also, what is 19/5 as a mixed number?

how many 4-Digit combinations can be made out of the numbers 1 2 3 4 5 6 7 8 without repeating the number in the same digit

Write an equation in slope-intercept form of the line with the given parametric equations. x = 8t + 3 y = 91 + 3

Julian wrote The following numeric pattern on the board 3,10,17,24,31,38. What numbers of julian's pattern are compound numbers.