Width would have to be a quadratic
Use long division to find the other factor of the cubic polynomial P (x).
P (x) factors in case it is reducible over R[x]
if it weren't then P (x) mod R [x] would be a field
otherwise you could use the Eisenstein Criterion.
Answer: I don't see the amount per football
Step-by-step explanation:
90,000
the reason is because look at the 1,000 place that rounds the 10,000 place to 0 and carries the 1 over to the 100,000 place
Let <em>w</em> be the wind speed and <em>p</em> the plane's speed in still air.
Flying against the wind, the plane has velocity
<em>p</em> - <em>w</em> = 390 mi/h
and flying with it, it has
<em>p</em> + <em>w</em> = 470 mi/h
Add the two equations together to eliminate <em>w</em> and solve for <em>p</em> :
(<em>p</em> - <em>w</em>) + (<em>p</em> + <em>w</em>) = 390 mi/h + 470 mi/h
2<em>p</em> = 860 mi/h
<em>p</em> = 430 mi/h
Subtract them to eliminate <em>p</em> and solve for <em>w</em> :
(<em>p</em> - <em>w</em>) - (<em>p</em> + <em>w</em>) = 390 mi/h - 470 mi/h
-2<em>w</em> = -80 mi/h
<em>w</em> = 40 mi/h
