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Libros Libros 131 - 140 de 150 sobre Hence, when the extremes and number of terms are given, to find the common difference,...
" Hence, when the extremes and number of terms are given, to find the common difference, — Divide the difference of the extremes by the number of terms, less 1, and the quotient will be the common difference. "
Practical and Mental Arithmetic: On a New Plan: in which Mental Arithmetic ... - Página 259
por Roswell Chamberlain Smith - 1861 - 280 páginas
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A Practical Business Arithmetic ...

Lorenzo Fairbanks - 1875
...extremes divided by the number of terms less 1, will be the common difference. Hence the RULE. — Divide the difference of the extremes by the number of terms less 1. EXAMPLES FOR PRACTICE. 1. The extremes of an arithmetical series are 2 and 22, and the number of terms...
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New Practical Arithmetic: for Grammar Departments

1875 - 384 páginas
...less i ; therefore iS-ig, or 2, is the common difference required. (Art. 93.) Hence, the RULE. — Divide the difference of the extremes ~by the number of terms less i. 9. The ages of 7 sons form an arithmetical series, the youngest being 2, and the eldest 20 years:...
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The Complete Arithmetic

Milton Browning Goff - 1876 - 452 páginas
...less one is 21 ; and 42 ( = 45 — 3) divided by 21 gives 2, the common difference. 524. RULE. — Divide the difference of the extremes by the number of terms less one. vaoni, E 3i s . What is the common difference when 1. The first term is 1, and the 21st, 41 ?...
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New Practical Arithmetic: for Grammar Departments

James Bates Thomson - 1876 - 384 páginas
...I; therefore 18-5-9, or 2, is the common difference required. (Art. 93.) Hence, the RULB.—Divide the difference of the extremes by the number of terms less 1. 9. The ages of 7 sons form an arithmetical series, the youngest being 2, and the eldest 20 years: what...
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Introduction to the National Arithmetic, on the Inductive System: Combining ...

Benjamin Greenleaf - 1876 - 330 páginas
...number of common differences, 9, the quotient, 3, will be the common difference. Hence the RULE. — Divide the difference of the extremes by the number of terms less one, and the quotient will be the common difference. EXAMPLES FOR PRACTICE. 1. The extremes of a series...
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The Normal Higher Arithmetic: Designed for Common Schools, High Schools ...

Edward Brooks - 1877 - 542 páginas
...solved by deriving the formula, and substituting the values of the given terms. See Art. 843. Rule.— To find the common difference, divide the difference of the extremes by the number of terms less one. 2. $1600 in 60 years amounts to $8320 ; required the annual interest. Ans. $112. 3. A begins business...
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The Standard Arithmetic: For Schools of All Grades and for Business Purposes ..

James E. Ryan - 1877
...number of terms. (20— 2)-f-3+l=7. The common difference equals the quotient obtained by dividing the difference of the extremes by the number of terms less 1 (l—a)-~-(n— 1). Example. The difference of the extremes is 24, the number of terms is 13; then...
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Ray's New Practical Arithmetic: A Rev. Ed. of the Practical Arithmetic

Joseph Ray - 1877 - 336 páginas
...6, the number of 20 — 2 _= I 8 terms less 1, is 3, the common difference. 1 8 -H 6 = 3 Rule. — Divide the difference of the extremes by the number of terms less one. 2. The extremes are 3 and 300 ; the number of terms 10 : find the common difference. 33. 3. A...
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Robinson's Progressive Practical Arithmetic: Containing the Theory of ...

Horatio Nelson Robinson, Daniel W. Fish - 1877 - 359 páginas
...less one ; thus, by taking away 2 in the fifth term, 2 + 3-1-3+3 + 3, we have 3 taken 4 times. RULE. Divide the difference of the extremes by the number of terms less one. 330 ARITHMETICAL PROGRESSION. EXAMPLES FOB PRACTICE. 1. The first term is 2, the last term is...
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Bradbury's Eaton's Practical Arithmetic ...

William Frothingham Bradbury - 1882 - 374 páginas
...divided by 3 (15 -=-3 = 5) gives one of these additions, that is the common difference. Hence, Rule. Divide the difference of the extremes by the number of terms less one. 91. The extremes of an arithmetical series are 4 and 55, and the number of terms is 18 ; what...
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