152E1-S2010 - MA 15200 15200X 1 Exam 1A Spring 2010 Which...

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MA 15200 & 15200X Exam 1A Spring 2010 1 1) Which statement below is false? 3 5 is a rational number. 6 6 (3 4)( ) ( )(3 4) is an example of the commutative property. The distance between 4 and 102 is 106. 3 10 10 3 A B C x y x y D E - - ≤ - + + = + + - - - = - 2) Simplify: 12 6[ 2 (5 4)] y y - - - - 42 36 18 12 42 12 17 4 None of the above. A y B y C y D y E + - - + - - 3) Which of the following is(are) simplified incorrectly ? 14 7 4 5 3 19 2 5 4 2 10 2 3 0 1 3 2 6 12 3 I 4 3 II 9 4 III (4 )(2 ) x y y x y x x y y x x y x y x y - - - - - - = = = A I and III only B II only C III only D II and III only E I and II only
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MA 15200 & 15200X Exam 1A Spring 2010 2 4) The mass of one hydrogen atom is 24 1.67 10 - × gram. Find the mass of 80,000,000,000,000 (80 trillion) such atoms. Write the answer using scientific notation. 10 11 11 312 10 1.336 10 1.336 10 9.67 10 1.336 10 9.67 10 A gram B gram C gram D gram E gram - - - - - × × × × × 5) Simplify: 2 75 10 12 - 8 63 5 3 24 7 10 3 None of the above. A B C D E - - - - 6) Evaluate: ( ) 2 1 0 3 1 3 8 5 - + - 16 3 10 3 6 1 2 A B C D E
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MA 15200 & 15200X Exam 1A Spring 2010 3 7) Simplify. Write answer as a polynomial in standard form.
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