SOLUTION: The safe maximum speed in knots (nautical miles per hour) of a sailboat is given by the formula: S=1.3 squares 1 where ‘S’ is the speed in knots and ‘l’ denotes the length of the

Algebra ->  Systems-of-equations -> SOLUTION: The safe maximum speed in knots (nautical miles per hour) of a sailboat is given by the formula: S=1.3 squares 1 where ‘S’ is the speed in knots and ‘l’ denotes the length of the       Log On


   

Question 357970: The safe maximum speed in knots (nautical miles per hour) of a sailboat is given by the formula: S=1.3 squares 1 where ‘S’ is the speed in knots and ‘l’ denotes the length of the waterline in feet. If the waterline length is 20 feet, what is the maximum safe speed of a sailboat?


Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


No. The hull speed of a sailboat is 1.3 times the square root of the waterline length. (actually, 1.34 is a better approximation, but who's counting).

So you want:



All you have to do is substitute 20 in place of the and do the arithmetic.

John

My calculator said it, I believe it, that settles it
The Out Campaign: Scarlet Letter of Atheism