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Mathematics 20 Online
OpenStudy (anonymous):

Double check please! A pole that is 10 feet tall casts a shadow 15 feet long. At the same time, another pole casts a shadow having a length of 12 feet. What is the height, in feet, of the second pole?

OpenStudy (anonymous):

My answer: 9

OpenStudy (anonymous):

did you do ratio check?

OpenStudy (anonymous):

No? What is a ratio check haha

OpenStudy (anonymous):

like cross multiplyto find the missing length 12 x 15=180 so 180/10=18

OpenStudy (anonymous):

wait i think its half ur correct

OpenStudy (anonymous):

So is it 8 or 9?

OpenStudy (anonymous):

i g with 9 10x9=90 which is half of 180

OpenStudy (anonymous):

aren't 12 and 15 the lengths of the shadows?

OpenStudy (anonymous):

assuming the ratios must be the same you'd set itu p like this

OpenStudy (anonymous):

|dw:1337412561316:dw|

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