What is the value of x?
1 answer:
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Bearing in mind that the major axis runs over the y-axis, therefore the "a" component will be under the fraction with the "y", check the picture below.
Well, it is 
. That is, the equation is 
. The run could be found when y=0, so 
or 
or 
or 
. 375 inches. 30 feet means 360 inches, as far as I remember (in my country only metric systems are being used :) ) so it doesn't really work -- the ramp is just a bit too long.