5. An ad campaign manager for McDonalds made some sketches for a billboard design on a sheet of paper. The actual board is 14 feet by 48 feet. Which sketch ideas has the closest ratio to the actual billboard? 1.8 inches by 11 inches
1.8 inches by 11 inches

1.7 inches by 9.2 inches
1.7 inches by 9.2 inches

2 inches by 6.9 inches
2 inches by 6.9 inches

2.4 inches by 7 inches

answer is b

step-by-step explanation:

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

i think the answer would be c