Perform the indicated operations. Express your answer in reduced form.

(8/√x)- (6/(√x)^9)

Let w=23 . what is the value of w + 45 ?

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

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)