Solve the system using substitution

x+y=8

y=3x

In a department store the owner paid $15 for 1kg of sugar. The owner marked the price up by 10% for the customers. How much dose he charge for 1kg of sugar

Solve the quadratic equation. Show your work x2+x3=10

8x-3y=6-4x in linear equation

If cos 0=sin b then which of the following must be true? 0+b=180? 0-b=90? b-0=90? b=90-0?

What's 43.586 to nearest tenth, hundredth, and whole number

What is 10+9 let's see if u can guess it

What's the terms and coefficients of 7p-3r+6-5s

A rectangular swimming pool with a flat bottom is 20 feet by 12 feet. How long will it take to fill the swimming pool to 5 feet if water is being pumped into the pool at 30 cubic feet per minute?

The following figure is a trapezoid. The top base is 18 inches, and the bottom base is 22 inches. The height of the trapezoid is 8.5 inches. Find the area of the trapezoid. Explain or show how you got your answer.

One hundred sixty eight square feet of carpet has been ordered for a 12 foot wide room. How long should the room be?