3rd TIME POSTING THIS PROBLEM CAN ANYONE HELP ME OUT IF THEY CAN? (no links as answers). Determine the value of x.

Is the square root of 4 plus the square root of 16 rational?

Marquise has 200 meters of fencing to build a rectangular garden. the garden's area (in square meters) as a function of the garden's width w w (in meters) is modeled by: a ( w ) = − w 2 + 1 0 0 w a(w)=−w 2 +100w what side width will produce the maximum garden area? meters

What is the length of ac in the given triangle?