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Mathematics 15 Online
OpenStudy (anonymous):

On a map, the distance between cities Atlanta,Georgia, and Nashville, Tennessee,is 12.5 feet. The actual distance between these two cities is 250 miles. What is the scale?

OpenStudy (anonymous):

@ryan123345

OpenStudy (anonymous):

@jim_thompson5910

OpenStudy (anonymous):

@Zelda

OpenStudy (anonymous):

Is it 0.05?

jimthompson5910 (jim_thompson5910):

Hint: Simplify the ratio 12.5 : 250 you may also want to convert to inches

OpenStudy (anonymous):

hmmm.

OpenStudy (anonymous):

let me try,

OpenStudy (anonymous):

i got 0.05 by dividing 12.5/250

jimthompson5910 (jim_thompson5910):

divide the other way around

OpenStudy (anonymous):

oh.

OpenStudy (anonymous):

lets see,

jimthompson5910 (jim_thompson5910):

the scale basically tells you which number to multiply the first number by to get the second

OpenStudy (anonymous):

20.

jimthompson5910 (jim_thompson5910):

eg: 1 to 50 has a scale of 50

OpenStudy (anonymous):

Oh. But here I am not given the scale

OpenStudy (anonymous):

I am told to find it.

jimthompson5910 (jim_thompson5910):

yes you divide the larger number by the smaller to get it

OpenStudy (anonymous):

oh. ok!

OpenStudy (anonymous):

every time?

jimthompson5910 (jim_thompson5910):

well if you're going from a large real world object to some scaled down version, then yes

OpenStudy (anonymous):

oh. ok.

OpenStudy (anonymous):

if from a scale to a real one viceversa?

jimthompson5910 (jim_thompson5910):

it could easily work in reverse though (say you want to blow up an image)

OpenStudy (anonymous):

like, a model or drawing to a house?

jimthompson5910 (jim_thompson5910):

ex: a scale model of a DNA molecule

OpenStudy (anonymous):

okay.

OpenStudy (anonymous):

thanks

jimthompson5910 (jim_thompson5910):

a large scale implies you're going from small to big (scale to real) a small scale implies you're going from big to small (scale to real)

OpenStudy (anonymous):

thank u..

jimthompson5910 (jim_thompson5910):

np

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