Use distributive property to write in expanded form 3(6+7)=

39

Step-by-step explanation:

so you multiply every thing in the ( ) so basically

6 times 3 + 3 times 7

(6^3)+(3^7)

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