Idon’t need an explanation, just the answer.

t is equal to -18.7.

You can find this by getting all the t values to the left side and all the number values to the right. The work is done below for you.

-4.48 - 17.8t + 10.29 = -12.89 - 18.8t > Add 18.8t to both sides

-4.48 + t + 10.29 = -12.89 > Subtract 10.29 from both sides

-4.48 + t = -23.18 > Add 4.48 to both sides

t = -18.7

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