Answer:
B.Obtuse
as shown in the pictures that you put the angel is obtuse
We have the following data set:
2,7,15,3,12,9,15,8,3,10
The range is the difference between the highest and lowest values in the set, to find the range, order the data set from least to greatest.
2,3,3,7,8,9,10,12,15,15
Then,

Mean is represented by the following expression:


Population variance formula looks like this:

Then, substituting:

For the standard deviation:
Answer: 5 1/2 (5.5)
Step-by-step explanation:
add 4 2/3 to 5/6
A square's area is the square of the sides
square area= side²
side=

side=

side=

OR we can divide it
|_

x²|_

x⁴|_

4x⁴|_