Question

Simplify the following expression:
x - 4y + 5z - 3x - y + 2z = ?

2x - 5y + 7z

-2x - 5y - 7z

-2x - 5y + 7z

-2x -5y + 3z

Answer 1

let me work it out ;D

Answer 2

ya what she said ^

Answer 3

Thats what I got

Answer 4

Thanks I just wanted to check

Answer 5

You really should just work it out together... next time.. if you just want an answer then maybe you state this in the original post. As in please check my answer: I got this is my answer.

Answer 6

Do you know this one?

The radius of a cone-shaped tank is 4 feet less than its height. If the height of the tank is (x - 3) feet, the expression below shows the volume of the tank.

1 over 3π(x - 7)2 (x - 3)

What does the factor π (x - 7)2 represent?

The total surface area of the tank

The area of the curved sides of the tank

The area of the circular base of the tank

The area of the base of about three such tanks