152E1-F2010

152E1-F2010 - MA 15200 1 Exam 1A Fall 2010 Evaluate the...

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MA 15200 Exam 1A Fall 2010 1 1) Evaluate the expression below for 3 and 4 x y = - = . 2 2( ) 5 x y x - + + 6 18 12 10 0 A B C D E - - 2) Which set of numbers contains only rational numbers ? { } { } { } { } 2 3 11 1 7 8 2 3 9 7 , 11, 49, 3.8, 0 , 0, 20, 3.888 , 3 , 6, , 0, 22, 2 None of the above A B C D E π - - - - - 3) Simplify: ( )( ) 3 2 5 4 1 4 3 x x y x y - - - 21 18 14 10 15 8 7 6 15 8 1728 108 108 12 36 x A y x B y x C y x D y x E y - - - - -

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MA 15200 Exam 1A Fall 2010 2 4) Use scientific notation to evaluate. Write answer in scientific notation and as a standard decimal number. Round to 4 digits, if necessary. 0.0189 0.000027 3 3 2 2 2 7 10 or 7000 1.429 10 or 1429 1.429 10 or 142.9 7 10 or 0.07 7 10 or 700 A B C D E - × × × × × 5) Rationalize the denominator and write result in simplest form (simplify). 11 8 11 2 4 11 8 2 22 2 11 2 2 11 2 2 A B C D E 6) Evaluate: ( ) ( ) 2 1 0 3 2 8 4 12 - + 2 31 6 3 13 3 1 A B C D E
MA 15200 Exam 1A Fall 2010 3 7) Subtract: 2 3 3 2 (12 3 5 2 ) ( 7 5 1) x x x x x x - - + - + - - 3 2 3 2 3 2 3 2 8 19 6 3 8 19 6 2 19 6 2 5 6 None of the above. A x x x B x x x C x x x D x x x E - + - - + - + + - + + - 8) Find the volume for the box shown with indicated length, width, and height.

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