| 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... | |
| 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.... | |
| 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... | |
| 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... | |
| 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... | |
| 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... | |
| 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... | |
| 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... | |
| 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... | |
| 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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