Answer:
6.5
Step-by-step explanation:
6.5+(3.5*2)-7/3
6.5+(7-7)/3
6.5+0/3
6.5+0
6.5
Answer:
C
Step-by-step explanation:
Well, the first useful step to find the Standard Deviation is to organize it into a table. Let's insert the information. The data set ={9,12,14,21} Mean = 14 n= quantity of observations, in this case: 4
1) In the first column, the data set. In the second column, the squared difference of each number minus the mean. The sum of the second column will be plugged into the ∑ formula. (Check below)
2) Notice that in the second row, where x value is 9. (x-xbar)²= (9-14)². Yuri has made that mistake, and He compromised all the calculations.
Answer:
Side known in ratio as 8: 32
Side known in ratio as 9: 36
Side known in ration as 10: 40
Step-by-step explanation:
We can add all the numbers in the ration to form the sum of all the sides, or also equal to perimeter. 8+9+10 equals 27.
So we can write 27x=108
x=4. Multiply 4 to 8, then 9, then 10. You get 32, 36, 40
Hope this helped, Have a Great Day!!