Monday

January 26, 2015

January 26, 2015

Posted by **selena** on Monday, May 23, 2011 at 8:35pm.

heres what it says on the paper. Using proportions, you can calculate the dimensions of objects without having to measure them. solve the problems that follow...

heres the problem

=====================================

amy is 5 feet tall and casts a 4-foot shadow. the pine tree has an 8 foot shadow. how tall is the pine tree..????

Please help me understand how to do this

- math -
**Ms. Sue**, Monday, May 23, 2011 at 8:38pmHere's the proportion:

Height is to shadow as height is to shadow. Let x represent the unknown -- the height of the tree.

5/4 = x/8

Cross multiply:

4x = 40

Solve for x.

x = 40/4

x = 10

The tree is 10 feet tall.

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