Answer:
1.) Gallon
2.) Pound
3.) Foot
Step-by-step explanation:
Hope this helps :)
We know that time is distance over velocity, that is:
time = distance / velocity
t = d / v
Now from the given:
d / 460 + d / 500 = 4.8
Now we can find for d:
d = 4.8 / [1/460 + 1/500]
d = 1150 miles
So the time of each flight is:
flight = 1150 / 460 = 2.5 hours
<span>return flight = 1150 / 500 = 2.3 hours</span>
Well you could factor it by dividing the entire equation by two...
x^2+8x-5=0
