152E2-F2010

152E2-F2010 - MA 152 1) Exam 2A Mindy can mow the community...

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MA 152 Exam 2A Fall 2010 1 1) Mindy can mow the community center’s lawn in 4 hours alone using a push mower. Her father, Jacob, can mow the lawn in three hours alone using a tractor mower. How long would it take them, if they work together? Round to the nearest tenth of an hour. 1.3 hours 1.4 hours 1.5 hours 1.6 hours 1.7 hours A B C D E 2) Subtract: ( ) 2 49 ( 3 2 ) i - - - - + ( i is the imaginary unit) 5 9 5 5 1 5 5 5 5 9 A i B i C i D i E i + - - - + - 3) Divide: 4 2 4 i i + ( i is the imaginary unit) 4 2 3 3 2 4 5 5 4 2 3 3 4 2 5 5 1 2 A i B i C i D i E i - + - + + + 4) After completing the square, the equation below becomes which choice? 2 20 3 0 x x + + = 2 2 2 2 2 ( 10) 17 ( 10) 97 ( 20) 397 ( 20) 37 ( 10) 103 A x B x C x D x E x + = + = + = + = + =
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MA 152 Exam 2A Fall 2010 2 5) Solve the equation below. One of the solutions is. .. (6 13) 6 x x + = - 13 5 12 13 313 12 12 2 3 3 2 13 6 A x i B x C x D x E x = - + = - - = = - = - 6) Solve. Write solutions in simplified form. 2
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152E2-F2010 - MA 152 1) Exam 2A Mindy can mow the community...

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