Answer:
30
Step-by-step explanation:
1. 7 times 2 is 14 + 6 is 20
2. Add 6 + 4 is 10
2. Add 20 and 10, u get 30
Hope this helps, Good Luck!
Answer:
I hope this helps:))
Step-by-step explanation:
Answer:
C 315
Step-by-step explanation:
(12 + 30) * 15/2 = 315
The mean is the average number meaning that it is all the numbers in a set added together and divided by how many number are in the set. In this case there are 4 numbers (16, 3, whatever number x is, and 5). So, to find out what x is, first you multiple 4 by the known mean which is 9.
4 x 9 = 36
Then you simply subtract 36 from all the known numbers to find x.
36 - 16 - 5 - 3 = 12
So x = 12
