Kaylin mixed two liquids for a science experiment. One container held 7/8 cup and the other held 9/10 cup. what is the total amount of the mixture

71/40

Step-by-step explanation:

We find the common denominator, which is 40,

so the first numerator is 9x4, and the second numerator is 7x5,

and adding them we get 71

and so the answer is numerator/denomitar = 71/40

2222222222222222222

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