Answer:
x = 5 and y = 22
Step-by-step explanation:
See attached image.
Answer:

Step-by-step explanation:
The answer is 3n^2+1
9n^2 - 6n^2 = 3n^2
3n-3n=0
4-3=1
Midpoint formula:
x, y = (x2+x1/2), (y2+y1/2)
x, y= (3+8/2), (4-4/2)
x, y= (5.5), (0)
Therefor the midpoint is (5.5, 0)
Hope I helped :)
Answer:
40
Step-by-step explanation:
The frequency column gives the number of houses in the sample, then
number of houses = 5 + 11 + 23 + 1 = 40