Answer:
Median is 12
Step-by-step explanation:
9, 10, 4, 12, 15, 17, 18, 10, 12, 13
Sort the data
4, 9, 10, 10, 12, 12, 13, 15, 17, 18
Median position: (n+1)/2
(10+1)/2 = 5.5th value
Median:
(12+12)/2
24/2
12
Putting the numbers from smallest to largest
4,9, 10, 10, 12 12, 13, 15, 17, 18,
The median is the middle number
There are 10 numbers
The middle number is between the 12's, so it is 12
NA
a = 53
A bisector creates two equal angles. Set them equal to each other.
5a - 160 = 2a - 1 ( subtract 2a from both sides)
3a = 159 (add 159 to both sides)
a = 53 (divide by 3)
see explanation
Euler's formula for polyhedra is
V- E + F = 2
where V is number of vertices, E number of edges and F number of faces
the mean is greater than the median
Solution given in the attachment.
