![]() Consider reviewing completed assignments with answer feedback and hints. Review assignments to prepare for exams.Your total score is an average of all your Mastering assignment scores, based on any weighting plan. For example, homework assignments may count for more than quizzes. "Weighted" averages can affect your total score.Check back later in case scores are hidden temporarily. Your instructor can hide the display of your scores for assignment items, individual assignments, and/or your total score for the course.To see the scores for all of your attempts, open the assignment. Multiple attempts for a best score - The best score from a multiple attempt assignment shows on your Scores page after the due date.A score can be affected by changes your instructor makes later, like removing an item or giving the class credit for a troublesome question. Your total score for the course is updated after the due date of each assignment. Availability of scores - Each item score is usually available as soon as Mastering grades your answers.Select Scores to review your assignment scores. #What is 2648 to two significant figures answers how to#See other info on how to answer different kinds of assignment questions, such as how to draw molecules.For multiple calculations, keep the significant figures as you work and round only at the end. For significant figures, use at least 3 digits in your answers. Grading tolerance and significant figures - For grading tolerance, your numeric answer usually must be within 2% or 3% of the correct answer.To enter a numeric value with a unit, abbreviate the units and don't add a period after the unit.Use arrow keys to navigate in your answer.Īrguments of trigonometric functions must be in radians, unless the question tells you to answer in degrees. To enter math expressions or chemical equation symbols, select answer box options or Keyboard Shortcuts for keyboard entries.Įnter * for the multiplication sign and don't use commas for large numbers like 2648. Special rules apply to timed assignments. Finish an assignment later as long as it's still available. Stop and restart an assignment - All of your submitted answers are saved.To get the most credit, check the grading policy before you work on an assignment. To complete an assignment - You need to complete ALL of its for-credit items, or all extra credit items if there are no for-credit items.So log 0.004567 = (log 4.567) - 3 = -2.3403.For standard Mastering assignments and any Adaptive Follow-Up assignments: To find the log of 0.004567, take log 4.567 = 0.6597 and subtract 3 (the index). This is simple - just find the log of the four significant figures of the number, and and take away the index. To find log 4567, take the log of 456 (2.6590) and add the number in column 7 of the mean differences (7) to the mantissa. Using the Mean Difference Column for numbers with four digitsįor numbers with four digits, simply add the number in the mean difference column (right hand 9 columns) to the answer you would get if you just ignored the fourth digit. To find log 456, follow down the numbers on the far left of the table until you reach 45 and take the number in column 6. The number in the column headed 0 will be the mantissa - the index is 1 (see above) - so log 45 = 1.6532. To find log 45, follow down the numbers on the far left of the table until you reach 45. ![]() The numbers given in the log table represent the mantissa part of the answer. If there are more than two digits in the number, follow across the table - the column headings give the third digit of the number. Use the numbers at the far left of the table to give the first two significant figures of the number. For example, the index of 245.211 is 2, the index of 24521.1 is 4 and the index of 24.5211 is 1.įor numbers with just 1 digit before the decimal point (1 to 9), the index will be 0.įor numbers less than 1, then index will be one more than the number of zeros between the decimal point and the first significant figure. ![]() 6742.įor numbers with more than 1 digit before the decimal point (10 and above), the index will always be one less than the number of digits before the decimal point. For example, the index of 2.6742 is 2 and the mantissa is. To find the log of a number, you first need the two parts of the answer - the index or characteristic (the part before the decimal point) and the mantissa (the decimal part after the decimal point). How to find the logarithm of a number, using four figure log tables (below) ![]()
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