Answer:
4x-20
Step-by-step explanation:
2x + 2x =4x
10 + (-30) = -20
put it together!
4x-20
(i hope thats the answer form u were asking for) xoxo raina
Answer:
standard deviation = 3.0331
Step-by-step explanation:
You can solve for this two different ways.
If you have a TI-84 calculator or something similar, type all the data into list 1. Then click the stat button, then the calc button, then 1-vars stats. This will give you mean, standard deviation, median, mode, etc.
If you are solving by hand, find the different between each data point and the mean. Square these numbers and find the average. Then take the square root of that.
3^2 + 4^2 + 1^2 + 2^2 + 4^2 = 46
46/5 = 9.2
square root of 9.2 = 3.0331
Hope this is helpful!!!!!!!!!!! :)
It’s the third one. Hopefully this helped
