Answer:

Step-by-step explanation:
Given

Required
What value of c makes the mean = 10
Mean is calculated as

In this case;
Mean = 10 and n = 4;
So, we have:


Multiply both sides by 4


Solve for c


Your answer is 2. Hope this helps!
Answer:
22
Step-by-step explanation:
The answer is 1/20 .............
The answer is 210 just multiply 420 by 7 cause theres 7 days is a week you get 2,940 minus from 3,150