Remember, a square root is a number times itself. so to fine the square root of 9, it would be 3
(x+108) and (x+88) are supplementary angles. This means that they add to 180.
(x+108) + (x+88) = 180
Solve for x:
2x + 196 = 180
2x = -16
x = -8
Answer:
11.57
Step-by-step explanation:
We have a simple formula to solve this:

where
SS is sum of squares
s^2 is the variance, and
n is the number of data points
We are given all the info to find out s^2. Hence,

Answer:
10. 7 + 4a
11. 7a + 4
12. 12a - 4
13. 14(a - 4)
14. 2a + b
15. 2(a + b)
16. 1/3x - 5
17. 3x/8
18. ab / a+b
Step-by-step explanation:
Let x be the number.
Can't explain, I need to do homework.
Hope this helps :)