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A 5.0-ft woman wishes to see a full length image of herself in a plane mirror. The minimum length mirror required is: 2.5 ft 3.54 ft 5.0 ft 10 ft no single answer: the farther away she stands the smaller the required mirror length

A 5.0-ft woman wishes to see a full length image of herself in a plane mirror. The minimum length mirror required is: 2.5 ft 3.54 ft 5.0 ft 10 ft no single answer: the farther away she stands the smaller the required mirror length

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A 5.0-ft woman wishes to see a full length image of herself in a plane mirror. The minimum length mirror required is: 2.5 ft 3.54 ft 5.0 ft 10 ft no single answer: the farther away she stands the smaller the required mirror length

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The typical grading tolerance in Mastering is 2-3%, although this value may vary (e.g. more lenient) depending on the particular problem. A number line is marked at 100, 105, and 110, where 105 is the properly-rounded answer. A green shaded region extends beyond 105 by 2 percent of this value in each direction. Significant Figures While Mastering does not directly grade your answer based on the number of significant figures it contains, the tolerance mentioned above is centered around the properly-rounded answer (as opposed to the full-precision answer). In some problems you will be explicitly told how many significant figures your answer should contain. You may find that entering extra significant figures than required often causes your answer to still fall within the accepted tolerance and thus graded as correct. 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