Question

help with a project! medals(:

Answer 1

Find at least three examples of conic sections in the real world (marketing, architecture, nature, etc.). Make sure your collage demonstrates at least two of the conic categories you have learned. You may use circles, ellipses, parabolas, or hyperbolas. Arrange your images on paper or in a document.

Answer 2

@jim_thompson5910

Answer 3

this ones a good one right?

Answer 4

and this?

Answer 5

@jim_thompson5910 youre my only hope!!

Answer 6

@phi

Answer 7

@cwrw238

Answer 8

@mathmale

Answer 9

you've found an ellipse and a hyperbola

so far, so good

Answer 10

oops not hyperbola, parabola (jumped the gun too quickly lol)

Answer 11

Find pictures in magazines or that you can print out online showing parabolas, ellipses (or circles), or hyperbolas and glue them onto paper (or print them onto a document).

Planetary orbits can be ellipses. The path of water shooting out of a fountain and falling back to the pool below can be a parabola; a lot of bridge designs involve parabolas. Hyperbolas may be seen in sundials.

Try looking in your math book for some specific applications, too. It may even have some sample problems that show how to figure out the standard form equation for some object in real life

Answer 12

yay! ill find one more(: one sec

Answer 13

good? @jim_thompson5910

Answer 14

pretty much a circle, so that works

Answer 15

For an ellipse, you could use the shadow of a sphere (maybe a ball.) For a parabola, you could use a satellite dish.

Answer 16

yay so this is the last part

Answer 17

Respond to each of the following prompts in a word processing document.

Write a brief description about one of the conics from your collage.
Write the equation that represents your conic in its standard form. To do this either find the measurements of your conic example to create the equation or guess the measurements of the conic.

Answer 18

I will write about the circle, the first part i know but im confused about the equation

Answer 19

any ideas anyone?

Answer 20

Write the equation that represents your conic in its standard form
Here are some of them
http://hotmath.com/hotmath_help/topics/conic-sections-and-standard-forms-of-equations.html

Answer 21

so i would be using (x – h)2 + (y – k)2 = r2 right?

Answer 22

yes, but I would use ^ to show exponents
(x – h)^2 + (y – k)^2 = r^2

and define what h, k and r mean: (h,k) is the center of the circle, and r is the radius

Answer 23

and those are basically guesses right? cause it isnt an exact measurement

Answer 24

so i could use (9,11) and 5 as the radius

Answer 25

The center is completely arbitrary since you can easily shift the conic around the coordinate grid (and it won't change the conic's shape)

Answer 26

As for the radius, you just measure from the center to any point on the circle

Answer 27

the center depends on where we put graph. You can just say you put the origin of the graph at the center of the circle, and use (0,0) as the center.

also, the radius (in the real world) needs units (e.g. inches or feet or meters or cm)
so you have to specify the units.

Answer 28

So i can put (0,0) and 5 inches for the units? and im done?

Answer 29

yes, but it looks like the radius is more than 5 inches. At least 1 foot for the radius

Answer 30

okay thanks(: