Given the system of equations presented here: 4x + y = 4 2x + 7y = 28 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? (5 points) multiply the second equation by −1 to get −2x − 7y = −28 multiply the second equation by −4 to get −8x − 28y = −112 multiply the first equation by −7 to get −28x − 7y = −28 multiply the first equation by −2 to get −8x − 2y = −8

multiply the first equation by - 7 to get - 28x - 7y = - 28

Step-by-step explanation:

This then results on  adding the 2 equations as

- 24x = 0 ⇒ x = 0 and y = 4

solution to system is (0, 4 )

multiply the first equatiom by -7 to get -28x -7y =-28

Step-by-step explanation:

4x + y = 4 (1)

2x + 7y = 28 (2)

multiply equation (1) by -7

-28x - 7y = -28 (3)

add equation (2) and (3)

-24x = 0

Divide bothside by 24

x =0

substitute x= 0 in equation(1)

4x +y = 4

4(0) + y = 4

y = 4

step-by-step explanation:

ok one would be money, and the other would be refreshments or something similar. if each bag of popcorn is 5.00 and each drink is half of that that means drinks are 2.50 the proper way to do that would to look and see how much of each you can buy without exceeding a limit of 30.00