30 + 0.25m > 40 + 0.10m
0.25m - 0.10m > 40 - 30
0.15m > 10
m > 10/0.15
m > 67 miles.....u would have to drive 68 or more miles for the second company to be less expensive
Suppose s and h are the mileage numbers for the SUV and Hybrid, respectively. Then if each vehicle drives 1 mile, the total gas consumption is
.. 1/s +1/h
Then the combined mileage is
.. 2/(1/s +1/h) = 2sh/(s+h)
Option 1: s=12, h=60
.. mpg = 2*12*60/(12+60) = 20
Option 2: s=11, h=75
.. mpg = 2*11*75/(11 +75) = 1650/86 ≈ 19.2
In summary,
.. Option 1: 20.0 mpg
.. Option 2: 19.2 mpg
_____
It usually works out best to increase the efficiency of the least-efficient contributor, as here.
Answer:
Step-by-step explanation:
Answer:
One car was going 45 mph and the other was going 55 mph
Step-by-step explanation:
(x*2 + 11x)+ 24
half of 11 is 5.5*2
(x*2+ 11x + 30.25 ) + 24 -30.25
(x*2 + 11x) -6.25
so
Vertex (11,-6.25)
