Amy wants to center her new tv that is 2 feet wide on her shelf that is 11 1/2 feet wide. how much space should be on each side of the tv

Don't know how to find x given these segment lengths

Complete the steps, which describe how to find the area of the shaded portion of the circle. find the area of the sector by multiplying the area of the circle by the ratio of the to 360. subtract the area of the triangle from the area of the sector.

The square root of 9x plus 7 plus the square rot of 2x equall to 7