Step-by-step explanation:
1)
3x+3
2)
10+2x
3)
8x+24
4)
8a+8b+8c
i feel your pain though :/
Tifania’s work is correct because the formula for circumference is 2(3.14)(r)
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.
Answer:
20
Step-by-step explanation:
set a proportion
16 x
____ = ______
80 100
by doing this you can cross multiply the terms
80x=1600
divide both sides by 80
x=1600/ 80=20