450 - 76.5 = 373.5
6th grade made 373.5 dollars more than 5th grade
Answer:
Step-by-step explanation:
D=4300x /x² + 40.
x = 1
D = 4300 / 41 = 104.88 p / mi²
x = 6
D = 25800 / 76
= 339.47 p / mi²
Population density increases as we go away from city's centre .
b )
x = 10
D=4300x /x² + 40.
D = 307.14 p/ mi²
x = 30
D = 137.23 p / mi²
Population decreases .
c )
when x is very high , density will decrease due to squared denominator whose value increases very fast .
d )
D < 200
4300x /x² + 40 < 200
4300 x < 200 x² + 8000
43 x < 2 x² + 80
2 x² - 43 x + 80 > 0
( x - 19.44 ) ( x - 2.05 ) > 0
Range x < 2.05
x > 19.44
Answer:
x=10/3
Step-by-step explanation:
hope that helps
F(-2) = 3*(-2)-1 = -7
g(5) = 1
-7 + 1 = -6
First, turn these mixed numbers into improper fractions,
and
. Next divide, which you do by flipping the second fraction and multiplying.
. If necessary, you could also turn this into a decimal, roughly 9.647, or back into a mixed fraction,
.