Solve the system of linear equations by substitution

-x+5y=28

x+3y=20

If you walk 1 1/2 miles in 1/2 hour what's ur average speed

What's greater 8 killometers or 850 grams

A bank charges a service fee of $7.50 per month for a checking account. A bank account has $85.00. If no money is deposited or withdrawn except the service charge, how many months until the account balance is negative

Two triangular faces of a rectangular pyramid each have an area of 7.8 cm2 and the other two faces each have an area of 16.5 cm2. If the area of the base is 60 cm2, what is the total surface area of the pyramid?

Three students performed a science experiment using salt and a beaker. The beaker contained 530.2 grams of salt before the experiment started. During the experiment, each of the 3 students removed 47.36 grams of salt from the beaker.

A chili recipe makes enough for 4 servings. The recipe calls for 5 tomatoes. You plan on making enough chili for 10 servings. How many tomatoes will you use? A. 8.5 B. 12.5 C. 15 D. 10

What is the solution to the system of equations The equations 9x-10y=6, 8x-10y=-23, 9x+10y=-16, and 8x+10y=13

The ratio of the measures of the angles of a triangle is 4:6:8. Find the measure of the largest angle. Largest angle?

Pat and Julie share some money in the ratio 2 : 5 Julie gets £45 more than Pat. How much money did Pat get?

Two thirds of a number reduced by 11 is equal to 4 more than the number. Find the number