You mean square root of 900?
I gotcha covered
30
(74 + 78 + 70 + x) / 4 = 80
Divide each number by 4.
18.5 + 19.5 + 17.5 + x = 80
Add the numbers you know so far.
18.5 + 19.5 + 17.5 = 55.5
You need 24.5.
Now, since we divided all the others by 4, we have to multiply 24.5 by 4 to see what the exam score would be.
24.5 * 4 = 98.
To get an average of 80%, the student would need to get a 98 on their fourth exam.
Answer:
A
Step-by-step explanation:
Whatever you do to get from 9 to 6 is also done to7.74.
This is not so much a calculable math problem as a common sense one. Based on your spending and income a 2 month fund pillow should be suffice. Don't hold me to this answer as you should decide this for yourself.
Answer:
Margin of Error = 10.712
Step-by-step explanation:
The provided information is:
Sample size, n = 27
Mean
= 250.4
Standard deviation (s) = 32.45
Degree of freedom = n - 1 = 26
Level of significance = 
Then, Critical Value is: 
Thus, Margin of Error:
