An arc is intercepted by a two radio that form an angle of 3π/4 radians. If the radius of the circle is 7 inches then which of the following is closest to the arc length, s, also measured in inches?
(1) 12.8
(2) 16.5
(3) 18.5
(4) 21.8

answer: for each 3 girls there is 2 boys . 3: 2

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none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square

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