PLEASE ITS A TIMED TEST HELP ME Alistair writes the system of equations below.

2x+3y= −60
2x+3y=1 20

Which statement describes the solution to this system of equations?

A- There is exactly one solution, (2,3).

B- There is exactly one solution, (−60,120).

C- There is no solution to the system of equations.

D- There is an infinite number of solutions to the system of equations.

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

5/12

step-by-step explanation:

give them both a common denominator so you get 9/12 and 4/12. subtract 9/12 from 4/12 to get 5/12.