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worty [1.4K]
3 years ago
15

A scale drawing of a movie screen is 21 inches long and 9 inches tall. The actual screen is 30 feet tall. What is the scale of t

he drawing?
Mathematics
1 answer:
VladimirAG [237]3 years ago
6 0
Okay so first you need to fix the numbers; I put both sides into feet so the equation would look like this: 1.75/.75=x/30. now you just cross multiply and divide: (30x.75)/1.75. that means x=12.8571429... (13). from there you divide: 1.75/.75=2.3 and 30/13=2.3. that means the scale is x2.3!
I hope that makes sense.
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