Suppose you are using a photocopier to reduce the size of a picture that is 10 inches wide by 12 inches long. if you reduce the picture so that it is 9 inches wide, how long will it be?

10.8 inches long

Step-by-step explanation:

We can determine the width to length ration by dividing 10 inches by 12 inches:

For every 5 inches wide the paper is 6 inches in length. If the picture is reduced to 9 inches in width, we can calculate the length by taking the inverse of 5/6 which is 6/5 and multiplying by 9 inches:

the paper is 10.8 inches long

step-by-step explanation:

hans did not square the 40-unit side; he merely multiplied it by 2.   incorrect.

24

step-by-step explanation:

the graph shows 30% of students walk. 80 students were questioned, so the number that said they walk is

30% × 80 = 0.30 × 80 = 24