Arithmetic: Instruction Paper, Τόμος 3American School of Correspondence, Institute of Technology, 1906 |
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Σελίδα 143
... PROPORTION . :: = . 339. A proportion is an expression of equality between ratios . We may indicate a proportion by the sign or by the sign For example , to express the proportion , 3 is to 9 as 6 is to 18 , we may write : 39 6 : 18 or ...
... PROPORTION . :: = . 339. A proportion is an expression of equality between ratios . We may indicate a proportion by the sign or by the sign For example , to express the proportion , 3 is to 9 as 6 is to 18 , we may write : 39 6 : 18 or ...
Σελίδα 144
... proportion is lacking , we may obtain it by the following rules : Rules . 1. The product of the means divided by either extreme gives the other extreme . 2. The product of the extremes divided by either mean gives the other mean . 336 ...
... proportion is lacking , we may obtain it by the following rules : Rules . 1. The product of the means divided by either extreme gives the other extreme . 2. The product of the extremes divided by either mean gives the other mean . 336 ...
Σελίδα 145
... proportion , or we may raise both sides to any power , without destroying the proportion . To illustrate this in the case of extracting a root , consider the proportion , 1949 : 441. Taking the square root of each term we have 1 : 3 7 ...
... proportion , or we may raise both sides to any power , without destroying the proportion . To illustrate this in the case of extracting a root , consider the proportion , 1949 : 441. Taking the square root of each term we have 1 : 3 7 ...
Σελίδα 146
... Proportion is one in which both couplets are direct ratios . 341. An Inverse Proportion is one in which one of the couplets is an inverse ratio . If the proportion is inverse , it is formed in the same manner as if direct . 342. Let us ...
... Proportion is one in which both couplets are direct ratios . 341. An Inverse Proportion is one in which one of the couplets is an inverse ratio . If the proportion is inverse , it is formed in the same manner as if direct . 342. Let us ...
Σελίδα 147
... proportion we have 27 : 32 :: 7 : x ; but in this case x equals 8 hours , which implies that the train running 32 miles per hour takes longer to cover the distance ... PROPORTION . 344. A Compound Proportion is an expression ARITHMETIC 147.
... proportion we have 27 : 32 :: 7 : x ; but in this case x equals 8 hours , which implies that the train running 32 miles per hour takes longer to cover the distance ... PROPORTION . 344. A Compound Proportion is an expression ARITHMETIC 147.
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Συχνά εμφανιζόμενοι όροι και φράσεις
annex a cipher Avoir bush bushel centimeters complete divisor contains couplet cube root cubic foot cubic inches cubic measure decagram decaliters decimal places decimal point decimeter denominate number dimensions divided dividend dry measure equal EXAMPLES FOR PRACTICE feet long Find the cube Find the square following table gallons given number grams greatest number hectoliter hectometer Hence higher denominations higher or lower hundredweight hypothenuse last figure length LINEAR MEASURE liquid measure liters LONG TON lower denomination meters metric system miles miles per hour millimeters myriameter number into periods number of sq ounces perches pints place the product proportion quotient remainder required root rods root already found square each side square measure square mile square root stere Subtract thick third term trial divisor Troy TROY WEIGHT U. S. standard unit of surface unit of volume weight
Δημοφιλή αποσπάσματα
Σελίδα 100 - SQUARE MEASURE 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet — 1 square yard (sq. yd.) 30^ square yards = 1 square rod (sq. rd.) 160 square rods = 1 acre (A.) 640 acres = 1 square mile (sq.
Σελίδα 104 - LIQUID MEASURE 4 gills (gi.) = 1 pint (pt.) 2 pints = 1 quart (qt...
Σελίδα 92 - ... HARVARD COLLEGE LIBRARY GIFT OF JAMES STURGIS PRAY Charles Eliot Professor of Landscape Architecture To be kept in the main collection of the College Library James Sturgis Pray, Cambridge, Mass.
Σελίδα 140 - A right-angled triangle is one which has a right angle. The side opposite the right angle is called the hypothenuse.
Σελίδα 105 - DRY MEASURE 2 pints (pt.) = 1 quart (qt.) 8 quarts =1 peck (pk.) 4 pecks = 1 bushel (bu...
Σελίδα 152 - Multiply the divisor by the last quotient-figure, and subtract the product from the dividend. Bring down the next period, and proceed as before. When a number is not a perfect square, annex ciphers, and continue the root to as many decimal places as are required.
Σελίδα 128 - ... subtract the product from the dividend, and to the remainder annex the next period for the next dividend.
Σελίδα 102 - SURVEYORS' SQUARE MEASURE. 197. This measure is used by surveyors in computing the area or contents of land. TABLE. 625 square links (sq. 1.) make 1 pole P. 16 poles " 1 square chain,, .sq. ch. 10 square chains " 1 acre, A. 640 acres " 1 square mile,. ..sq. mi. 36 square miles (6 miles square)
Σελίδα 144 - Multiply the divisor, thus augmented, by the last figure of the root, and subtract the product from the dividend, and to the remainder bring down the next period for a new dividend.
Σελίδα 108 - Every year that is exactly divisible by 4 is a leap year, the centennial years excepted ; the other years are common years.