Solve this exercise using the fact that the sum of the measures of the three angles of a triangle is 180degrees°.
in a triangle, the measures of the three angles are x, x − 21, and x - 12. what is the measure of each angle?

Answer question above and explain each step : )

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

Asquare picture with sides of 32 inches is to be mounted on a square mat with sides of 52 inches. find the area of the mat that will remain uncovered by the picture.