Answer:
m=32 p=42 r=24 x=45
Step-by-step explanation:
1. Multiply the answer with the denominator to find the missing number.
2. Check your answer by dividing the numerator and denominator to see if the equation is correct.
 
        
             
        
        
        
Average speed = total miles driven / total driving time
average speed = (150 + 100) / (3 + 1 1/2) =
                             250 / (4 1/2) =
                             250 / (9/2) =
                             250 * 2/9 =
                             500 / 9 = 55.55 mph
        
             
        
        
        
Answer:
B
Step-by-step explanation:
Variance can be said to be a measure of dispersion for a random sample. 
Variance = pq/n
When given the variance, we can find the standard deviation. 
Standard deviation = √variance 
= √pq/n
 
        
             
        
        
        
Answer:
2 20/24
Step-by-step explanation:
divide 4/2=2
then do 5/8÷3/4=5/8×4/3=20/24
u basically inverse 3/4
2 20/24