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Libros Libros 21 - 30 de 30 sobre Hence, when the extremes and the number of terms are given, to find the sum of all...
" Hence, when the extremes and the number of terms are given, to find the sum of all the terms,- — Multiply £ the sum of the extremes by the number of terms, and the product will be the answer. "
The Tutor's Guide: Being a Complete System of Arithmetic; with Various ... - Página 137
por Charles Vyse - 1806 - 320 páginas
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Arithmetic on the Productive System: Accompanied by a Key and ..., Libro 3

Roswell Chamberlain Smith - 1841 - 311 páginas
...price ; then, 10 yds. x 15= $1.50, whole cost. A. $1.50. 21. Hence, when the extremes, and the number of terms, are given, to find the sum of all the terms. — Multiply half the sum of the extremes by the number of terms, and the product will be the answer...
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Arithmetic on the Productive System: Accompanied by a Key and Cubical Blocks

Roswell Chamberlain Smith - 1842 - 306 páginas
...price; then, 10 yds. x 15=$1. 50, whole cost. A. $1.50. 21. Hence, when the extremes, and the number of terms, are given, to find the sum of all the terms. — Multiply half the sum of the extremes by the number of terms, and the product will be the answer....
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The United States Arithmetic: Designed for Academies and Schools

William Vogdes - 1847 - 256 páginas
...was the oldest son's portion ? § 173« CASE 3. The first term, the number of terms, and the ratio given, to find the sum of all the terms. RULE. Find the last term, as before, then subtract the first from it, and divide the remainder by the ratio less one, to the .quotient of...
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ARITHMETIC ON THE PRODUCTIVE SYSTEM

ROSWELL C. SMITH - 1850
...price ; then, 10 yds. x 15= $1.50, whole cost. J.. $1.50. 21. Hence, when the extremes, and the number of terms, are given, to find the sum of all the terms. — Multiply half the sum of the extremes by the number of terms, and the product will be the answer...
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Engineers' and Mechanics' Pocket-book ...

Charles Haynes Haswell - 1851 - 286 páginas
...of terms 7 ; what is the common difference 1 15— 3-H7— 1) = 2 Ans. When the Extremes and Number of Terms are given, to find the Sum of all the Terms. RULE. — Multiply the number of terms by half the sum of the extremes. EXAMPLE. — How many times does...
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ENGINEERS AND MECHANICS POCKET BOOK

CHAS. H. HASWELL - 1853
...number of terms 7; what is the common difference ? 15— 3-H(7~-l)=2 Ans. When the Extremes and Number of Terms are given, to find the Sum of all the Terms. RULE. — Multiply the number of terms by half the sum of the extremes. EXAMPLE. — How many times does...
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The Practical Calculator; a Treatise on Arithmetic ...

C. W. Thornhill - 1854
...interest ? Ans, £980658112 15*. 1%d. CASE 5 — The least term, the ratio, and the number of .terms given, to find the sum of all the terms. 'RuLE. — Find the greater extreme as before, and divide the difference between the extremes by the ratio less one, to...
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The tutor's assistant

Francis Walkingame - 1855 - 167 páginas
...more ; what was the eldest son's portion ? Ana. £25600. The first term, ratio, and number of terms given, to find the sum of all the terms. RULE. Find the last term as before, then subtract the first from it, and divide the remainder by the ratio, less one ; to the quotient...
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Arithmetic on the Productive System: Accompanied by a Key and Cubical Blocks

Roswell Chamberlain Smith - 1856 - 311 páginas
...price ; then, 10 yds. x 15= $1.50, whole cost. A. $1.50. 21. Hence, when the extremes, and the number of terms, are given, to find the sum of all the terms. — Multiply half the sum of the extremes by the number of terms, and the product will be the answer...
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Adams's Improved Arithmetic: Arithmetic, in which are Combined the Analytic ...

Daniel Adams - 1861 - 280 páginas
...to find. But 22 is the sum of the extremes of the series ; hence, when the extremes and the number of terms are given to find the sum of all the terms, RUZ.C. Multiply the sum of the extremes by the number of terms, and half the product will be the sum...
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