Answer:
a
Step-by-step explanation:
 
        
             
        
        
        
Answer:
69 3/4
Step-by-step explanation:
The stock market goes down to 50 3/4 at the beginning of the day
At the end of the day it goes up to 120 1/2
Therefore total change in the stock market from the beginning to the end of the day can be calculated as follows
= 120 1/2 - 50 3/4
= 241/2 - 203/4
= 279/4
= 69 3/4
Hence the total change in the stock market from the beginning to the end of the day is
69 3/4
 
        
             
        
        
        
The answer is 35
Since they are supplementary they both equal 180 degrees.
(3x+10)+(2x-5)=180
Add them up
5x-5=180
Subtract 5 from both sides
5x=180-5
5x=175
Divide 5 from both sides 
x=35.
 
        
             
        
        
        
Answer:
angle ABC = 30°
Step-by-step explanation:
I attached a picture. if any part is not understandable leave a comment.
 
        
             
        
        
        
4x=112
x=112/4      ( '/' means divide)
x=28