Which system of equations is equivalent to the following system?
2x + 4y = 14
4x + y = 20
a.2x + 4y = 14
-16x – 4y = -80
b.2x + 4y = 14
- 4x + y = -20
c.4x + 8y = -28
4x + y = 20
d.-2x - 4y = 14
4x + y = 20

A

Step-by-step explanation:

Given :

2x + 4y = 14   eq 1

4x + y = 20 eq 2

if you multiply eq 2 by -4 on both sides, you get

-4 (4x + y = 20) = -4 (20)

-16x -4y = -80 eq3

we can see that eq. 1 and eq 2 together forms the system of equations presented in option A, Hence A is equvalent to the orginal system of equations given in the question.

Step-by-step explanation:

B.

C.

D.

my acc plz

step-by-step explanation:

walter needs to make at least 5 more cookies but no more than 40. 5 ≥ x ≥ 40;

step-by-step explanation:

walter has to make a minimum of 20 cookies. he already has 15 cookies made, so he must make 5 more to meet the minimum.

the maximum amount of cookies he can make is 55. he already has 15, so he has to make no more than 40 more cookies to meet the maximum.