To find the mean, add up all the test scores and divide by the number of tests:
524/10 = 52.4.
X = 112
See attachment file below.
Hope it helped!
Answer:
Step-by-step explanation:
Hi there!
Here;
The question is: 3÷ 
→ Take reciprocal of 1/6, then;
= 3*
= 18
So, the answer is option D.
Hope it helps!
Option A will be the correct answer
Answer:
6/7 - 1/3
Step-by-step explanation:
You know that 1/2=0,5
Then, you have to solve the two sums:


You now know what number of 0,47 and 0,52 is closer to 0,5; which is 0,52
0,47 is to 0,03 from 0,5
0,52 is to 0,02 from 0,5