Posted by fred on Friday, March 13, 2009 at 6:07pm.
Cross multiply this ratio and solve for x.
5/6 = 30/x
Ms Sue I'm still stuck
5/6=30/x
You can see that 5 was multiplied by 6 to get 30. In order to keep the fraction the same, you'll also have to multiply the 6 in the denominator by 6 to get 36 as your value for x, which in this case represents the height of the tree in feet.
When you cross multiply, you multiply the two farthest terms for the numerator and the two closest terms for the denominator.
5/6 = 30/x
5x = 6 * 30
5x = 180
x = ?
X=36
Right. The tree is 36 feet tall.
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