Answer:
Step-by-step explanation:
show the picture of the problem
Well it's too easy if you understand
the first is true
39/500
Kindly check attached picture for histogram plot
Given the data:
0,0,0,0,0,1,1,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,4,5,6,7,7,7
The range [0,2), [2,4), is the same as ;
Class range __ frequency
0 - 1 __________ 11
2 - 3 __________ 8
4 - 5 __________ 6
6 - 7 __________ 4
Kindly see picture for histogram plot
area = width * length
or
A = W * L
55 = W * (W+6)
solve for width:
0 = W^2 + 6W - 55
this is a quadratic and has two solutions -11 and 5
a length can only be non-negative so discard -11.
width W = 5 miles
now the length is 5+6 = 11 miles