PLZ HELPP GIVE ME THE ANSWERS TO WHAT EQUELA TO ( B, C, D, & S, T, U ) IF I WILL MAKE BRAINLIEST FOR THE BEST ANSWER! :D (MATH)

a = 73

b = 107

c = 73

d = 107

r = 152

s = 28

t = 152

u = 28

b= 107, c=73 d=107.  t=152 s= 62 u=62

Step-by-step explanation:

b= if you look at the top it says if you add a and b together you get 180, that means if you subtract a (73) you will get the degrees of b and then d is just the same as b so that is also 107. Then c has the same degrees as a.

T= since r is 152 and they are crossing each other that means they are the same degrees. And you and s are the same and they both are 62 degrees because they are an acute angle.

4x and 6y

im not sure though

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify