The definition of mean, is to add up all the numbers and divide it by how many numbers there are. So, in this case the mean would be 1+1+1+2+2+2+2+3+3+4+4+4+4+5+5+6+7+7+8+8+9 = 86. You would then take 86 and divide that by 21, and you would get 4.0
The definition of median states to find the middle of the numbers. So the median would be 4.
So you would just take 4 - 4 = 0.
0 would be correct.
Answer:
x=-6
x=-4
x=-2
x=4
Step-by-step explanation:
just did the test on e2020 and this was the answer!
Answer:
1
Step-by-step explanation:
Step-by-step explanation:
The formula is Distance=√(x2-x1)²+(y2 -y1)²
x1 is 5, x2 is 1, y1 is 9, y2 is 6
D = √( 1-5)² +(6-9)²
D = √(-4)²+(-3)²
D = √16+9
D = √25
D = 5 units
we have to firstly apply the distance formula to find the length of sides of the triangle
distance formula = 
So length AB = 
BC= 
AC = 
Now perimeter = AB+BC+AC = 
Plug in calculator
perimeter= 11.4 units