Solve for the missing term in the proportion

pls help, with solution pls​

1:7 = 2:14 = 3:21 = 4:28 = 5:35 = 6:42

1:2 = 2:4 = 3:6 = 4:8 = 5:10 = 6:12

1:3 = 2:6 = 3:9 = 4:12 = 5:15 = 6:18

1:2 = 2:4 = 3:6 = 4:8 = 5:10 = 6:12

1:8 = 2:16 = 3:24 = 4:32 = 5:40 = 6:48

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

55 because 55 + 55 = 110 good luck babe