A10 pound bag of potatoes cost $5.20. what is the cost per pound? not multiple choice

52 cents a pound

Step-by-step explanation: Simply divide 5.20 by 10.  Here's a trick, when dividing by 10, 100, or 1000. (or any number that starts with 1 and has zeros behind it). Just move the decimal to the left the number of zeros in the you are dividing by. For example, if you are to divide 43.50 by 100 you get 0.4350

i used to know how to do this in 7th but i forget easily

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