Solve the following system of equations using substitution.

5y = x - 15

-3y = - 12x - 9

What is the value of x?

(Enter as a fraction)

Apply the definition of subtraction and properties of operations to find the result. 1/8-3/7-1/8

The sum of 2 numbers is 7. if one number is subtracted from the other, the result is - 1. find the numbers

How many means add or subract

The equation - 5x^2+72x+378 models the number of students enrolled in a school where x is the number of years since the school first opened in 1990. How many students did the school have when it opened?

Which of the following sets of data would you likely represent with a square matrix? A shoe salesperson wants to use an augmented matrix to represent the quantity of children's shoes and adult shoes sold at his store for two days.

What is the square root of 61

William buys 4 chocolate bars and each bar weighs 1/4 pound. Mary buys 2 chocolate bars and each one weighs 1/2 pound. william claims that the chocolate weighs the same amount. mary disagrees. who is correct.

Amanda uses the recipe shown to make punch for a family party: 7 parts mixed fruit 2 parts lemonade How much lemonade will she need to make 180 fluid ounces of punch? a. 140 fluid ounces b. 40 fluid ounces c. 36 fluid ounces d. 60 fluid ounces

Are 8x and 2x to the second power like terms?

Bob's bill for dinner at a restaurant is $37.80. If he wants to leave a 15% tip, which best represents a reasonable amount for the tip?