Writing to Explain: What is the difference of 20.39 and 7.6? Explain how to subtract 7.6 from 20.39.

To subtract or add decimal numbers the decimal points of both numbers should be undr each other

Step-by-step explanation:

20.39

_ 07.60

= 12 . 79

Step-by-step explanation: The difference of 20.39 and 7.6 is like subtracting 20.39 - 7.6. Or, taking 7.6 away from 20.39.

When we subtract 20.39 - 7.6 we get 12.79 as our answer.

For example, if we had $20.39 and we spent $7.60, we would have $12.79 left to spend on something else because $20.39 - $7.60 = $12.79.

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