Idon’t understand the correct answer is 1/6 but i tried it and i got 1/4 then i tried it again and then i got 2/3 i am very explain.

1/6

Step-by-step explanation:

-1/4 + 5/12

1/6

Minus a minus = plus

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

the correct answer is x/3+10≥32

hope this !