Gray is building braces for a shelf. He will attach each brace to the front edge of the 6-inch shelf and 3 inches down the wall. If he uses 3 braces for the shelf, how much bracing, in inches, will he need? Round your answer to the nearest tenth of an inch. 6 in. wall 3 in. O 67.5 inches © 20.1 inches O 13.4 inches O 6.7 inches​

How do you do this geometry problem

What are the sotions to the quadratic equation 9x^2=4

The weights of players in a basketball league are distributed normally. the distance (d) of each player's weight (w) from the mean of 86 kilograms was computed as follows: d = |w - 86| if d is greater than 7 for approximately 5% of the players, what is the approximate standard deviation of the players' weights? a. 1.75 kilograms b. 3.5 kilograms c. 4.3 kilograms d. 7 kilograms