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작성자: Herakles
9/9/2015 3:44:31 AM
34
I NEED HELP WITH A MATH QUESTION
Pls. Just Part C.
[b]Edit: This is the whole question:[/b] [i]"The main section of the suspension bridge in Parc de La Gorge de Coaticook, Quebec, has cables in the shape of a parabola. Suppose that the points on the tops of the towers where the cables are attached are 168 m apart and 24 m vertically above the minimum height of the cables.
Use each quadratic function to determine the vertical height of the cables above the minimum at a point that is 35 m horizontally from one of the towers."[/i]
[b]Edit 2:[/b] The answer is [b]8.17 m[/b], but I need to show the process.
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11 답변Ok, I fiddled with the numbers a bit and got 8.17. From the right tower, a horizontal distance to the left tower would be -35, so... (1/294)[(-35)+84]^2 = 8.167 From the left tower, a horizontal distance to the right tower would be 35: (1/294)[35-84]^2 = 8.167 It checks out, 8.167 meters is your vertical distance from the bottom of the cable wire at 35 meters out from each tower. You may be wondering why I didn't add in that -24 at the end. It's because the -24...I have know clue, honestly. It represents vertical distance from top of towers to bottom of cable but it doesn't make sense when you take it into account for the answer so... If I understood how you got those two equations for the towers I may be able to help with that -24 thing, but you got the right answer and the work so I guess it works.
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2 답변Might I suggest Openstudy.com ? This is a website where there are hundreds of online tutors waiting to help for free. I use it all the time when I'm having trouble with my school work.
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17 답변The Selected Answer is 100% incorrect. He literally just plugged in the answer you gave him, and worked backwards. Im not sure how you could think that what he did was in any way correct.
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So you're saying U can just ask offtopic to do my homework for me!? Why have I never thought of this before? [spoiler]Of course I think it is best if anyone who says the answer explains how the problem works and how to solve it, and why it is that way. I'm not able to help sadly though.[/spoiler]
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2 답변If i could understand english better, i could help you. For the love of god i already did this kind of thing 2 years ago.
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1 답변Download the app called photo math and take a picture of the actual 'typed' equation, it will show u the answer and process
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8 답변작성자: Alpha 9/9/2015 1:29:25 PM
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1 답변작성자: Thaowel 9/9/2015 6:40:17 AM
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