Use substitution to solve the system of equations.

y = - 2x

x - 3y = 21

(3, 4)

(-6, 12)

(3, - 6)

(-2, - 6)

Which is an example of the associative property? A. 3 • (x + 5) = 3 • x + 15 B. x + 5 = 5 + x C. (x + 3) + 7 = x + (3 + 7) D. If x = a, and a = 7, then x = 7.

9 ten thousandths scientific notation

A marble is drawn from a bag containing 3 red marbles and 2 blue marbles and a number cube with faces numbered 1 through 6 is tossed. What is the probability that the marble drawn is blue and the number cube shows a number less than 3? A. 11/15 B.

What is 125 centermeters to 87.5 centimeters

I am the smallest 5-digit even number you can make

Round 11.507 to the place of the zero

The product of (a-b) is a^2 - b^2

Tammy had a 20% off coupon that she used toward the purchase of a printer how much was the original price if the coupon took $50.00 off the bill

8. RATS is a parallelogram. mZS = (8x) and mZT = (7x), then find the value of 'x'.

4 pt = how many fl oz