Answer:

Step-by-step explanation:

divide by x-a

Answer:
i think 18
Step-by-step explanation:
dont come at me if im wrong
Answer:
Step-by-step explanation:
(8 + 2)/(-2 - 1)= -10/3
Answer:
Following are the solution to the given question:
Step-by-step explanation:
Confidence Interval for both the percentage of all x-ray machines
p = the machinery's share is not working:

Lower
Confidence interval = p - error margin
Upper
Confidence Interval = p + error margin
So,
Confidence Interval 
Answer:
45
Step-by-step explanation:
5 times 5 is 25 plus 20 is 45 hope this helps