2x + 3y = -1
3x + 4y = -4

5x+7y=-5

Step-by-step explanation:

The equation is already lined up with its matching like term for Example X goes with x and y goes with Y

2x+3x=5x

3y+4y=7y

-1-4= -5

answer:

125 yards

explanation:

75+50=125. that is my answer

the polynomial is a perfect square trinomial of the form a^2-2ab+b^2:

option a. true

step-by-step explanation:

9x^2-12x+4

comparing with the form a^2-2ab+b^2

1.) a^2=9x^2

solving for a: square root both sides of the equation:

sqrt(a^2)=sqrt(9x^2)

a=sqrt(9) sqrt(x^2)

a=3x

2.) b^2=4

solving for b: square root both sides of the equation:

sqrt(b^2)=sqrt(4)

b=2

to be a perfet square trinomial 2ab must be equal to 12x. let's check:

2ab = 2 (3x) (2)

2ab = 12x

correct