Answer:
42
Step-by-step explanation:
because that angle is a little less than half of 90 so 42 is the best answer 
 
        
             
        
        
        
Answer:
45 inches
Step-by-step explanation:
85-40=45
b=45
how I know?
use the formula c^2-a^2=b^2
85 being c, a being 40 and b being 45
 
        
                    
             
        
        
        
Answer:
D) 4x + 5y = -30 = -4/5
Step-by-step explanation:
A) 5x + 4y = 28 slope = -5/4
b) 4x-5y = -25 slope = 4/5
c) 4y - 5x = -12 slope = 5/4
d) 4x + 5y = -30 slope = -4/5
 
        
             
        
        
        
Answer:
Step-by-step explanation:
The equation
2 = (1/6)x represents this situation.
2 is 1/6 of some value.  In this case, the value is the total number of marbles.  2 represents 1/6 of the total number of marbles is how to read that equation in context.  Solve that equation for x
2 = (1/6)x  
12 = x           (multiply both sides by 6 to get rid of the fraction)
 
        
             
        
        
        
Answer:
Therefore Mason would be expected to win 50 times.
Step-by-step explanation:
i) probability of flipping a head for a fair coin is 
ii) probability of flipping two fair coins is = 
iii) Therefore if Mason plays 200 times he would be expected to win 
     = 