Find the missing side or angle. Round to the nearest tenth.
B=45°
a=9
c=19
b=[ ? ]

Geometry. i need step by step explanation on how to do each problem.

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

15 there is a line that includes the point 0,10 and has a slope of 7/4. what is it’s equation in slope intercept form