hollodom9654
06.05.2020 •
Mathematics
Question 2 (1 point)
A plane flies 910 miles with the wind in the same amount of time it takes for it to fly 660 miles against the wind. If the plane's speed is 350
mph, what is the wind speed. Choose the correct equation that can be used to solve.
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Ответ:
55.734 mph
Step-by-step explanation:
Let's call the wind speed x and the time of flight t.
Then, we can write the following equation, knowing that the distance is equal speed times time of flight:
910 = (350+x) * t
660 = (350-x) * t
If we isolate t in both equations and compare its value, we have that:
910 / (350+x) = 660 / (350-x)
(350+x)/(350-x) = 910/660
350 + x = 1.3788 * (350-x)
350 + x = 482.58 - 1.3788x
2.3788x = 132.58
x = 55.734 mph
Ответ:
D: the model is a good fit 100%
Step-by-step explanation: