Scientists use the Beaufort wind scale to approximate wind speed. The formula is B= 1.69 sqrt(s+4.45) -3.49 where B is the Beaufort number and s is the speed in miles per hour. To the nearest mile per hour, what is the approximate wind speed if the Beaufort number is 6?

Answer 1

You have to be kidding.

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(1.69*sqrt(6+4.45)) -3.49=

Answer 2

B = 1.68*sqrt(s+4.45)-3.49 = 6.
1.69*sqrt(s+4.45) = 6+3.49 = 9.49,
Divide both sides by 1.69:
sqrt(s+4.45) = 5.62,
Square both sides:
s+4.45 = 31.53,
S = 27.1 mi/hr.

Answer 3

OOPs! Henry, not anomymous