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152E2-S2011

# 152E2-S2011 - MA 15200 and 15200X 1 Exam 2A Jay can paint...

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MA 15200 and 15200X Exam 2A Spring 2011 1 1) Jay can paint his parent’s living room in 8 hours alone using a traditional brush and roller. His brother, Jon, buys a new paint system and new ladder and is able to paint the same room in 5 hours alone. If each continues to paint by his own method, in how many hours could they paint the living room together? Which statement describes this time? Between 1 and 2 hours. Between 3 and 4 hours. Between 4 and 5 hours. Less than 1 hour. Between 2 and 3 hours. A B C D E 2) Find the values of x and y as described below, where i is the imaginary unit. (1 6 ) ( 2 5 ) (1 6 )( 2 5 ) x i i y i i = + - - - = + - - 1 , 32 17 3 , 28 7 3 11 , 28 17 3 11 , 32 17 1 11 , 28 17 A x i y i B x i y i C x i y i D x i y i E x i y i = - + = - - = + = + = + = - = + = - - = - + = - - 3) After completing the square, the equation 2 7 1 0 x x - - = becomes which of the following? ( ) 2 2 2 2 2 7 51 2 2 7 50 7 25 2 2 7 53 2 4 7 49 2 4 A x B x C x D x E x - = - = + = - = + =

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MA 15200 and 15200X Exam 2A Spring 2011 2 4) Solve this equation. Which choice is
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152E2-S2011 - MA 15200 and 15200X 1 Exam 2A Jay can paint...

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