A rectangle is 12 feet long and 5 feet wide. if the length of the rectangle is increased by 25% and the width is decreased by 20%, what is the change in area of the rectangle?

Jerry has 60 coins consisting of quarters and dimes. The coins combined value is $9.45. Find out how are quarters and how many are dimes.

Which of these four sets of side lengths will form a right triangle

Do the ratios 1/2 and 7/13 form a proportion

Cual es la diferencia 4/7 y 1/3

At a certain store, four cans of soup cost $5. What is the cost per can and the correct equation to find the total cost for any amount of cans of soup?

Suppose a recent plant journal indicated that the mean height of mature plants of a certain species of sunflower is 10.4 ft.

Can 40:70 be simplified?

Each week our school's team travels to other schools for competitions. Today the five members of the gymnastics team and seven weight lifters are on the way to our rival school for meet.

The Air conditioner unit in the classroom uses 120 volts. it requires 2000 watts of usage on the average, and it stays on for 8 hours every day.

3y+6y=9 how solve this