Posted by **Tammy** on Thursday, April 26, 2012 at 8:51pm.

1.Find the height to the nearest foot of a tree that makes a 50-foot shadow when a 2 ft. 6 in. pole is used to make a shadow of 3 feet.

- College math -
**Steve**, Friday, April 27, 2012 at 10:38am
The 2.5 ft tree makes a 3ft shadow. That means the shadow is 1.2 times the height.

So, 1.2 * 50 = 60, and the tree's shadow is 60 ft.

Or, algebraically,

s/50 = 3/2.5

2.5s = 150

s=60

- College math -
**Faye**, Saturday, April 28, 2012 at 10:05pm
please show your work

3 - x > 7. Subtract 3 from both sides: -x > 4. Multiply both sides by -1: x 7 + x, then subtract 7 from both sides: -4 > x, which means the same as x < -4

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