The First Steps in Algebra: By G. A. Wentworth ...

Ginn, 1894 - Algebra - 184 pages
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Page 160 - The sum of the two digits of a number is 9, and if 9 is added to the number, the digits will be reversed. Find the number. Let x — the tens' digit, and y = the units
Page 161 - If the number is divided by the sum of its digits the quotient is 7 ; if the digits are interchanged, and the resulting number diminished by 12 is divided by the difference between the two digits, the quotient is 9. What is the number?
Page 209 - ... specially suited to their requirements. It is substantially equivalent to the author's Complete Algebra, but is believed to be in many respects better. The arrangement and the treatment of the topics have been revised, and fuller explanations have been given. It is more complete than the School Algebra, inasmuch as it takes up the topics usually included in higher Algebra. It gives a fuller treatment of the simpler elements of Algebra than the College Algebra, and not so elaborate a treatment...
Page 209 - ... institutions. The preparatory schools and academies for which it is particularly recommended are those of high grade, especially such as give the pupils a thorough preliminary drill in Arithmetic. Normal schools, seminaries, and a large percentage of the colleges, particularly in the West and South, will find it specially suited to their requirements. It is substantially equivalent to the author's Complete Algebra, but is believed to be in many respects better. The arrangement and the treatment...
Page 154 - A would have twice as much money as B. How much has each ? Let x = the number of dollars A has, and у = the number of dollars В has.
Page 206 - Schools, and are believed to present the best known methods in the most attractive, available, and practical form. Wentworth and Reed's First Steps in Number. For prices, see List at the beginning of this Catalogue; for full description, see Common School Catalogue. A High School Arithmetic. (Wentworth & Hill's Practical Arithmetic.) By GA WENTWORTH, Professor of Mathematics, Phillips Exeter Academy, and the late Dr.
Page 212 - ... first part (Exercise Manual) contains about 4500 problems classified and arranged according to the usual order of textbooks in Algebra; and the second part (Examination Manual) contains nearly 300 examination-papers, progressive in charac-.
Page 132 - How long will it take each to do the work? Let x = the number of days it will take A...
Page 165 - How much has each? Let x = the number of dollars A has. Then, 2 x = the number of dollars B has, and 3 x = the number of dollars C has.
Page 140 - Find the time between 3 and 4 o'clock when the hands of a clock are at right angles to each other.