Since 68% of the sample ranges from the plus minus first standard deviation from the mean, then interval wherein it will occur will be between 53.5% to 60.5%. I got this answer through adding and subtracting one standard deviation (3.5) from the mean (which is 57).
Answer:
what do you need?
Step-by-step explanation:
I don't see a question.
X^2/(x- 9 = 81/(x - 9)
This is the equation for which you want the solution.
Multiplying both sides of the equation by (x - 9) we get
x^2(x - 9)/(x - 9) = 81(x - 9)/(x - 9)
So the (x - 9) goes out from both the denominator and the numerator and then the simplified equation becomes
x^2 = 81
x ^2 = (9)^2
x = 9
So the value of the unknown variable x comes out to be 9.
Answer:
20%
Step-by-step explanation:
To find the percent she gave away, find how much of 25 treats 5 is:
5/25 = 1/5 = 0.2
Convert 0.2 into a percent:
0.2 * 100 = 20%
Answer:
44%
Step-by-step explanation:
11 out of the 25 students got off the bus so we divide 11 by 25.
.
%
