Answer:
Answer is given below with explanations
Step-by-step explanation:
![{v}^{2} + 11v + 18 = 0 \\by factorization we get (v + 9)(v + 2) = 0 \\ v = - 9 \: \: or \: \: v = - 2](https://tex.z-dn.net/?f=%20%7Bv%7D%5E%7B2%7D%20%20%2B%2011v%20%2B%2018%20%3D%200%20%5C%5C%3C%2Fp%3E%3Cp%3Eby%20factorization%20we%20get%3C%2Fp%3E%3Cp%3E%20%28v%20%2B%209%29%28v%20%2B%202%29%20%3D%200%20%5C%5C%20v%20%3D%20%20-%209%20%5C%3A%20%20%5C%3A%20or%20%5C%3A%20%20%5C%3A%20v%20%3D%20%20-%202)
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Answer:
1200 miles.
Step-by-step explanation:
Let d represent one way distance.
We have been given that a plane averaged 800 mph on a trip going east, but only 400 mph on the return trip.
The time taken while going east would be
.
The time taken while returning back would be
.
Since the total flying time in both directions was 4.5 hr, so we will equate sum of both times with 4.5 as:
![\frac{d}{800}+\frac{d}{400}=4.5](https://tex.z-dn.net/?f=%5Cfrac%7Bd%7D%7B800%7D%2B%5Cfrac%7Bd%7D%7B400%7D%3D4.5)
Make a common denominator:
![\frac{d}{800}+\frac{d*2}{400*2}=4.5](https://tex.z-dn.net/?f=%5Cfrac%7Bd%7D%7B800%7D%2B%5Cfrac%7Bd%2A2%7D%7B400%2A2%7D%3D4.5)
![\frac{d}{800}+\frac{2d}{800}=4.5](https://tex.z-dn.net/?f=%5Cfrac%7Bd%7D%7B800%7D%2B%5Cfrac%7B2d%7D%7B800%7D%3D4.5)
![\frac{d+2d}{800}=4.5](https://tex.z-dn.net/?f=%5Cfrac%7Bd%2B2d%7D%7B800%7D%3D4.5)
![\frac{3d}{800}=4.5](https://tex.z-dn.net/?f=%5Cfrac%7B3d%7D%7B800%7D%3D4.5)
![\frac{3d}{800}\times \frac{800}{3}=4.5\times \frac{800}{3}](https://tex.z-dn.net/?f=%5Cfrac%7B3d%7D%7B800%7D%5Ctimes%20%5Cfrac%7B800%7D%7B3%7D%3D4.5%5Ctimes%20%5Cfrac%7B800%7D%7B3%7D)
![d=1.5\times \frac{800}{1}](https://tex.z-dn.net/?f=d%3D1.5%5Ctimes%20%5Cfrac%7B800%7D%7B1%7D)
![d=1200](https://tex.z-dn.net/?f=d%3D1200)
Therefore, the one-way distance was 1200 miles.
Answer:
I believe it is 80%
Step-by-step explanation:
Tell me if its right
Answer:
you're right
Step-by-step explanation:
when a slope is equal to 0 that makes it undefined