Answer:
   
Step-by-step explanation:
A suitable common denominator is 4k^2. (This eliminates the first and last choices.)

 
        
             
        
        
        
Answer:
one quarter of the total number of students will be those who failed their exam.
Step-by-step explanation:
Three - fourths = those who passed the exam 
one quarter will be those who failed their exam 
From the total number of the students.
 Let's make an example 
40 students who take the exam.
3 over 4 students from the total number of 40 take the exam and the result is passed and it mean 30 students passed in the exam.
1 over 4 students take the exam and the result is failed and it mean 10 students failed in the exam.
4 minus 3 over 4 will get the answer 1 over 4.
Use 1 over 4 to multiple with the total number of the students and that how you will get the answer for those who failed in their exam.
 
        
             
        
        
        
Answer:
there is only one zero 
Step-by-step explanation: and if it easy why you didint do it just ascking 
 
        
             
        
        
        
Answer:
A. 0.25 (rounded)
B. 0.19 (rounded)
C. 0.17 (rounded)
D. 0.17 (rounded)
Step-by-step explanation:
Hope that helped!
 
        
             
        
        
        
Answer:
12 miles in 4 hours is 3 mph
52-12=40 miles left
40 miles at 5 mph would take 8 hours
8+4=10
it took 10 hours to finish the trip.