This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1913 Excerpt: ...much must be in each investment in order that the total income may be b dollars? The Decimal System of Notation.--In our decimal system of notation for numbers the importance of a digit depends upon its relative position. Thus in 47 the 4 stands for 4 x 10 because it stands in the tens, place, whereas in 54 the 4 ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1913 Excerpt: ...much must be in each investment in order that the total income may be b dollars? The Decimal System of Notation.--In our decimal system of notation for numbers the importance of a digit depends upon its relative position. Thus in 47 the 4 stands for 4 x 10 because it stands in the tens, place, whereas in 54 the 4 stands for 4x1 because it stands in the units, place. The integer of two digits whose tens, digit is x and whose units, distance is y is accordingly 10 x + y, and not xy as might be supposed. 11. Write the integer whose units, digit is x and whose tens, digit is y. 12. Write the integer whose units, digit is y and whose tens, digit is twice as great. 13. The sum of the digits of a certain integer between 10 and 100 is 7, and when the digits are reversed, the number is decreased by 27. What is the number? 14. The difference of the digits of a certain integer between 10 and 100 is 2, and the sum of the digits is 9 less than the number. What is the number? 15. A man rows 12 miles downstream in 2 hours and returns in 3 hours. How fast does he row in still water and what is the rate of the current? Hint.--His rate downstream is equal to his rate in still water plus the rate of the current, and his rate upstream is equal to the difference of these rates. 16. A crew can row 7 miles an hour downstream and 2 miles an hour upstream. What is the speed of the current? Bint.--In this problem there are two unknown numbers, although only one of them is asked for. In such a case proceed as if both of the unknowns were asked for, but try to eliminate the one not desired. 17. A man rows a miles downstream in 2 hours and returns in 3 hours. How fast does he row in still water and what is the rate of the current? Are your results in Problems 15 and 17 consistent? 18. ...
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Add this copy of First Course in Algebra to cart. $68.07, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2016 by Palala Press.
