Write or draw to explain a way to find each sum 6+7, 8+4, 2+9

6 + 7 = 13

I got this because 7 added to 6 is 13

8 + 4 = 12

4 added on to 8 is 12

2 + 9 = 11

9 more plus 2 is 11

Hope this helps

-AaronWiseIsBae

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