Answer:
n=7
Step-by-step explanation:
7 times 5 equals 35.
Answer:
Subtracting and subtracting
Step-by-step explanation:
Answer:
s = 19.7
Step-by-step explanation:
First we need to calculate the mean x' of the sample as:

We sum all the scores and divide them by the number of scores.
Then, the standard deviation s is calculated as:

We square every score less the mean, sum every value, then divide that by the number of scores less 1 and finally, we calculate the square root.
So, the standard deviation of the sample is 19.7
15/50 if the problem needs to be out of fiftieths, then you multiply the denominator (10) by 5 to get 50, so you do the same to the numerator to get your answer
An easy way to remember a right triangle is the 3/4/5 rule.
Your answer is 6, 8, 10.
Those 3 numbers are multiples of 3, 4, and 5.