Mrs. Opsahl drove 399 miles on 14 gallons of gas. How many miles per gallon did her car get?

28.5 miles per gallon

Step-by-step explanation:

Take the number of miles and divide by the gallons

399/14

28.5

28.5 miles per gallon

28. 5 miles per gallon

Step-by-step explanation:

To do this you must divide 399 by 14

399  ÷  14 = 28.5

To check:

28. 5 × 14 = 399

10 cm

step-by-step explanation:

if the polygon is a rectangle, then the perimeter is x+x+y+y. using the values that you gave, the perimeter is 3+3+2+2=10cm.