Solve the system by substitution. In the space provided, type the answer without any

spaces between the letters, numbers, or symbols.

3. x - y = 12

x + y = 18

The sides of a rectangle are in the ratio 5:7 and the perimeter of the rectangle is 96cm. What is the area of the rectangle?

What is the mean absolute deviation of Dean's homework scores? 70, 95, 35, 90, 85

Is 8 yards bigger of smaller than 20 feet

Solve in C: (3+2i) z+1-2i=2iz-2+i

Banners at the school store we're on sale for $3 off the regular price. Lois bought 4 on sale and paid $18. Write and solve an equation to find the regular price of one banner.

What is P=IRT if you solve T

Salina has a rope that is 9 feet long. How many pieces can she cut from the rope so that each piece is 1/3 foot long?

Typing paper measures 8 1/2 inches wide and 11 inches long. find the perimeter of the typing paper.

Mr Thomas has to travel from New York City to Princeton, New Jersey and back three time each week. If Princeton is 66 miles from New York, how many total miles does he travel in a week

The tempature rose 4 degrees every 90 minutes before noon and rose 2 degrees every 45 minutes after noon are these rates equivalent explain your reasoning