Zc and Zx are supplementary angles. Zy measures 49º.
What is the measure of Zx?

The length of each stair is 11 inches. what is the rise, r, for each stair? round to the nearest inch. 2 inches 7 inches 17 inches 24 inches

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1

This is about circle theorems. someone asap : (