6/10 of the class has a pet dog. 27/100 of the class has a pet cat. The rest of the class has a pet fish. What fraction of the class has a pet fish?

13/100 have pet fish

Step-by-step explanation:

6/10 = 60/100

60/100 + 27/100 = 87/100 have cats and dogs

that leaves 13/100 have pet fish

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 answer is 489

step-by-step explanation: