To find the mean you add up all the numbers and divide that amount by the amount of numbers. Which looks like this:
7 + 20 + 8 + 15 + 10 + 17 + 7 + 13= 97
97 divided by 8 = 12.125
The mean is 12.125.
To find the median you first need to put the numbers in order and then try to find the number in the middle. If there is two numbers in the middle those two numbers are still the median:
7, 7, 8, 10, 13, 15, 17, 20,
The median(s) are 10 and 13.
Answer:
384
Step-by-step explanation:
I got the area of the hidden square (Just add the same triangle to the ramp, it makes a square). Now, I divided that by 2 to just get 1 triangle.
Answer:
27
Step-by-step explanation:
18 years ago she was 9 and 9 x 3 is 27
