Answer:
The population density is 618.93 per square mile.
Step-by-step explanation:
It is given that,
No. of people, N = 70,000
The radius of a city's town hall, r = 6 miles
We need to find the population density. It can be calculated by the formula i.e. number of people divided by area of land such that,
So, the population density is 618.93 per square mile.
To compare these fractions, bring them to the same denominator. Expand the fractions to bring them to the common denominator (LCM):
7/8 = (2 * 7) / (2 * 8) = 14/16
13/16 = (1 * 13) / (1 * 16) = 13/16
Same denominator fractions sorted ascending:
13/16 < 14/16
Initial fractions in ascending order:
13/16 < 7/8
W=30/24.5≈1.2.
Therefore, Sierra's morning walk is about 1.2 miles.
Molly's 3.45 mi - sisters 1.23 - brothers .85
3.45- 1.23= 2.22
2.22-.85=1.37
molly walked 1.37 miles farther
