a. Your answer is correct.
b. Divide the given value of sigma by √n where n = sample size = 7. Then perform the same calculation you did for part a. The probabiilty is 0.4427.
 
        
             
        
        
        
Answer:
123°
Step-by-step explanation:
Supplementary angles add up to be 180 degrees.
This means angles A and B will add up to be 180 degrees.
We can find the measure of angle B by subtracting 57 from 180
180 - 57
= 123
So, the measure of angle B is 123 degrees
 
        
             
        
        
        
A. Factor 28 + 7g  7(g <span>+ 4) 
add 
28 </span><span>+ 7g 
= 7 (g </span>+ 4)
B. (12r + 15) – 65 Remove parentheses
12r+15-65
= 12r - 50 
C. 24 – (8p – 12)
24 - (8p - 12) = -8p + 36 
24 - (8p - 12)  -(8p - 12) 8p + 12
= 24-8p+12
Simplify 24-8p+12 
Group like terms
-8p+12+24
Add the numbers  12+24=36
Answer is -8p+36