The graph shows the cost c in dollars of w pounds of a proportional relationship slelect all true statements a 2.5 pounds cost 1 dollar. 1 pound cost 2.50 . 5 pounds cost 12.50. 9 pounds of peanuts cost 19.50. the point 4 ,10 is on the graph of the proportional relationship

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

yes.. it's proven to be 36.

14

step-by-step explanation:

14