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Mathematics 15 Online
OpenStudy (anonymous):

A tree 5 feet tall has a shadow that is 14 feet long. If another tree cast a shadow 21 feet long, at the same time of day, how tall is the tree?

OpenStudy (lgbasallote):

use ratio and proportion \[\frac{5}{14} = \frac{x}{21}\] does that help?

OpenStudy (unklerhaukus):

lgbasallote has used similar triangles |dw:1344083550098:dw|

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