Answer:
x=-5
Step-by-step explanation:
10x + 15 = 5x-10
-5x -5x
5x+15 = -10
-15 -15
5x = -25
/5 /5
x = -5
3/10 = .3 and 87/100 = .87
382.3 - 191.87= 190.43
so the answer is 190.43
Hope this helped!! :))
Answer:
X[bar]= 115
Step-by-step explanation:
Hello!
Every Confidence interval to estimate the population mean are constructed following the structure:
"Estimator" ± margin of error"
Wich means that the intervals are centered around the sample mean. To know the value of the sample mean you have to make the following calculation:
![X[bar]= \frac{Upper bond + Low bond}{2}](https://tex.z-dn.net/?f=X%5Bbar%5D%3D%20%5Cfrac%7BUpper%20bond%20%2B%20Low%20bond%7D%7B2%7D)
= 115
Since both intervals were calculated with the information of the same sample, you can choose either to calculate the sample mean.
I hope it helps!
Answer:
8 & 17?
Step-by-step explanation:
8*2= 16
so that makes 17 one more then 8*2 and the sum of 17 and 8 =25
Answer:
50
Step-by-step explanation:
let x represent the total number of students.
8 / x = 16/ 100
16x = 800
x = 50
50 total students