What is 2 +2 ?

cannot solve too hard! marking everyone (you deserve it if you are smart enough_=)

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

Secant be and cf intersect at point d inside a what is the measure of cde

If value of cos330° is √3/2 then find tan165°.