Question 757719
The base of a ladder is 4 horizontal feet from the wall where its top rests. The slope of the line made by the ladder is 3.0. What is the vertical height of the top of the ladder? (Assume that the positive direction points from the base of the ladder toward the wall.)
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Draw the picture:
You have a right triangle with base = 4 feet, 
Let the vertical height be "h":
Equation:
slope = rise/run = 3
h/4 = 3
h = 12 ft
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Cheers,
Stan H.
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