Solution: The correct option is d. 8.75
<u>Explanation:</u>
The formula for variance is:
First we need to find the mean 
of the given data:
Now let's find 
, please have a look at the attached picture:
an negative can't be a absolute value
If x=3 then 5x3=15-2=13+6=19x1/4=4 3/4 so that means that 2 1/4+2 1/2 could be equivalent
P.S.I just chose 3 because it was the first number to pop into my head
~Mathlete12321~
If the width is w and the length is l, then 2w-2=l and 2w+2l=72 (using the perimeter equation). Plugging 2w-2 in for l, we get 2w+(2w-2)*2=72 and 6w-4=72. Adding 4 to both sides, we get 6w=76. After that, we divide both sides by 6 to get 74/6=w. Since l=2w-2=136/6, we get (136/6)(74/6)=656.75=area
Answer:
−
4
cot
(
−
45
)
cos
(
390
)
sin
(
330
)
Step-by-step explanation:
