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anonymous
 one year ago
someone help me! I have an assignment which requires me to write the equation that represents the image of an arch monument that i will post below. PLEASE HELP
anonymous
 one year ago
someone help me! I have an assignment which requires me to write the equation that represents the image of an arch monument that i will post below. PLEASE HELP

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the height of the arch is 630ft as well as the width

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0this was the assignment. https://i.gyazo.com/ea2c7cf9f897771440fb99ec9074fb06.png

Hero
 one year ago
Best ResponseYou've already chosen the best response.1Start by making a sketch of it on graph paper.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0do i just place the vertex at the origin?

Hero
 one year ago
Best ResponseYou've already chosen the best response.1It's probably best to place one of the ends of the foundation at the origin.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok give me a second to sketch it

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1439572894166:dw

Hero
 one year ago
Best ResponseYou've already chosen the best response.1That's a good start. Now, find the midpoint of the line segment containing endpoints (0,0) and (630,0)

Hero
 one year ago
Best ResponseYou've already chosen the best response.1(315, 0) actually. Plot that point on your graph and draw a vertical line segment from the vertex to the midpoint of the base segment.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yea thats what i meant. and ok

Hero
 one year ago
Best ResponseYou've already chosen the best response.1That vertical line segment is essentially the axis of symmetry.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1439574756537:dw

Hero
 one year ago
Best ResponseYou've already chosen the best response.1You should probably use the vertex form of a parabola to write the equation for it and make sure to include the correct restrictions for the domain.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so y = a(xh)^2 +k ?

Hero
 one year ago
Best ResponseYou've already chosen the best response.1Yes that. You already know the values for (h,k).

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0what do i plug in for a though? do i leave it as it is?

Hero
 one year ago
Best ResponseYou've already chosen the best response.1To do that, insert (h,k), then for (x,y) insert (0,0)

Hero
 one year ago
Best ResponseYou've already chosen the best response.1Show the work you did to arrive at that result

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0a(0315)^2 + 630 =0 99225a + 630 = 0 99225a = 630 a = 630/99225 a = 2/315

Hero
 one year ago
Best ResponseYou've already chosen the best response.1So you should be able to express the equation of the parabola in vertex form. Is that all you're required to do for this problem?

Hero
 one year ago
Best ResponseYou've already chosen the best response.1Actually, that value for a is an approximation. It's not exact.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yea thats pretty much it. My teacher just told us to do that for one of the pictures given.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0thanks for the help.
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