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Mathematics 8 Online
OpenStudy (anonymous):

help!

OpenStudy (anonymous):

Omg what happened!

OpenStudy (anonymous):

lol

OpenStudy (anonymous):

What are scale drawings? Can you give an example?

OpenStudy (anonymous):

@Michele_Laino

OpenStudy (anonymous):

@heretohelpalways

OpenStudy (anonymous):

let's say a human was 5 feet tall

OpenStudy (anonymous):

but then the human was drawn with a scale factor next to it

OpenStudy (anonymous):

and you would use the scale factor next to it to convert the measurements on the drawing to real life

OpenStudy (anonymous):

wait but what is a scale factor? and in your own words please :)

OpenStudy (anonymous):

it's a type of ratio

OpenStudy (anonymous):

for example: A car drawn out had a scale factor of 1:40. For every 1 mm on the drawing, it is really 40 mm in real life

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

anyways, next question

OpenStudy (anonymous):

whats the complete answer with the example in it?

OpenStudy (anonymous):

a type of ratio that can be used to convert a drawn out object's measurements on paper to the real life measurements of that object

OpenStudy (anonymous):

that's a scale factor

OpenStudy (anonymous):

a scale drawing is a drawing of something in real life, with measurements that are either smaller or bigger that the object/thing in real life

OpenStudy (anonymous):

there is normally a scale factor next or in the drawing

OpenStudy (anonymous):

and that tells you how

OpenStudy (anonymous):

to convert the measurements in the picture to the measurements in real life

OpenStudy (anonymous):

ok and an example of scale factor?

OpenStudy (anonymous):

1:30

OpenStudy (anonymous):

for every 1 cm on the paper is 30 cm in real life

OpenStudy (anonymous):

not on the paper, but rather on the scale drawing

OpenStudy (anonymous):

next question...

OpenStudy (anonymous):

but can you give an example of a scale factor in words not in numbers please

OpenStudy (anonymous):

a ratio that helps convert the measures of a scale drawing to the measures in real life

OpenStudy (anonymous):

thats the example?

OpenStudy (anonymous):

no, that's the definition of scale factor in my own words

OpenStudy (anonymous):

okay, let's say there was a cow

OpenStudy (anonymous):

oh okay :)

OpenStudy (anonymous):

and he was drawn out 5 mm

OpenStudy (anonymous):

on the drawing there was a scale factor of 1:20

OpenStudy (anonymous):

so for every 1 mm in the drawing it was 20 mm in real life

OpenStudy (anonymous):

so you would do 5*20

OpenStudy (anonymous):

to find the measurement of the cow in real life

OpenStudy (anonymous):

so whats the full example ?

OpenStudy (anonymous):

what's the question, now I'm getting confused

OpenStudy (anonymous):

the question is... What are scale drawings? Can you give an example?

OpenStudy (anonymous):

scale drawing-a scale drawing is a drawing of something in real life, with measurements that are either smaller or bigger that the object/thing in real life

OpenStudy (anonymous):

example: a human was drawn 5 cm

OpenStudy (anonymous):

every 1 cm on the drawing was really equal to 1 ft in real life

OpenStudy (anonymous):

so the person would be 5 feet

OpenStudy (anonymous):

so is this the full answer for the question? A scale drawing is a ratio that helps convert the measures of a scale drawing to the measures in real life. For example, a human was drawn 5 cm. Every 1 cm on the drawing was really equal to 1 ft in real life. So the person would be 5 feet.

OpenStudy (anonymous):

no

OpenStudy (anonymous):

a scale factor the definition you gave me

OpenStudy (anonymous):

I mean you gave me the definition of a scale factor

OpenStudy (anonymous):

a scale drawing is a drawing of something in real life, with measurements that are either smaller or bigger that the object/thing in real life

OpenStudy (anonymous):

thats the definition?

OpenStudy (anonymous):

yup

OpenStudy (anonymous):

no, i need the definition of a scale factor not a scale drawing

OpenStudy (anonymous):

"A scale factor is a ratio that helps convert the measures of a scale drawing to the measures in real life."

OpenStudy (anonymous):

change drawing to factor

OpenStudy (anonymous):

ok so is this the full answer to the question? A scale factor is a ratio that helps convert the measures of a scale drawing to the measures in real life. For example, a human was drawn 5 cm. Every 1 cm on the drawing was really equal to 1 ft in real life. So the person would be 5 feet.

OpenStudy (anonymous):

yes, I think that is correct

OpenStudy (anonymous):

please make sure

OpenStudy (anonymous):

just to be safe, I'll give you a different example

OpenStudy (anonymous):

a cat in a drawing was 22 mm. For every 2 mm in the drawing, it would be 1 inch in real life

OpenStudy (anonymous):

so the cat would be 11 inches in real life

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

next question! :)

OpenStudy (anonymous):

Can you describe the difference between complementary and supplementary angles?

OpenStudy (anonymous):

complimentary angle: two angles with a sum of 90

OpenStudy (anonymous):

supplementary angle: two angles with a sum of 180

OpenStudy (anonymous):

so is this the full answer? A complimentary angle are two angles with a sum of 90. A supplementary angle are two angles with a sum of 180.

OpenStudy (anonymous):

yup

OpenStudy (anonymous):

ok next!

OpenStudy (anonymous):

okay, make it quick

OpenStudy (anonymous):

3. Can you find the area and circumference of a circle given the radius or diameter?

OpenStudy (anonymous):

yes, you can

OpenStudy (anonymous):

how

OpenStudy (anonymous):

area of circle:

OpenStudy (anonymous):

r means radius

OpenStudy (anonymous):

half of the diameter of a circle is what the radius is

OpenStudy (anonymous):

OpenStudy (anonymous):

that's the circumference of a circle formula

OpenStudy (anonymous):

how do i put that in words

OpenStudy (anonymous):

the area of a circle is pi times radius squared

OpenStudy (anonymous):

the circumference of a circle is two times pi times radius

OpenStudy (anonymous):

pi is typically approximated to 3.14

OpenStudy (anonymous):

so is this the full answer... yes, you can. The area of a circle is pi times radius squared. The circumference of a circle is two times pi times radius. Pi is typically approximated to 3.14.

OpenStudy (anonymous):

Yes, that's correct

OpenStudy (anonymous):

sorry I have to go to ballet now... I'll tag someone

OpenStudy (anonymous):

@nincompoop @Astrophysics

OpenStudy (anonymous):

nooooo! please i only have two more

OpenStudy (anonymous):

they are quick

OpenStudy (anonymous):

4. What are vertical angles? Give an example?

OpenStudy (anonymous):

vertical angles

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