Which of the following is equivalent to the quadratic equation below after completing the square

x^2+6x-3=12

a. (x+6)^2=12

b.(x+6)^2=9

c.(x+3)^2=24

d.(x+3)^2=9

C

Step-by-step explanation:

To complete the square add c t the other side of the equal sign. Then divide the middle term b by 2 and square it.

After finding the new c term and adding it to both sides, write the left side in factored form.

the answer is a

step-by-step explanation:

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6