New Elementary Algebra: Designed for the Use of High Schools and Academies

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R. S. Davis & Company, 1879 - Algebra - 309 pages
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Page 95 - Now .} of f- is a compound fraction, whose value is found by multiplying the numerators together for a new numerator, and the denominators for a new denominator.
Page 54 - The square of the difference of two quantities is equal to the square of the first, minus twice the product of the first by the second, plus the square of the second.
Page 279 - Multiply the last term by the ratio, from the product subtract the first term, and divide the remainder by the ratio, less 1; the quotient will be the sum of the series required.
Page 265 - If any number of quantities are proportional, any antecedent is to its consequent as the sum of all the antecedents is to the sum of all the consequents. Let a : b = c : d = e :f Now ab = ab (1) and by Theorem I.
Page 257 - ... if the circumference of each wheel be increased one yard, it will make only 4 revolutions more than the hind wheel, in the same distance ; required the circumference of each wheel. SOLUTION. Let x = circumference of hind wheel in yards. and y = circumference of fore wheel in yards. 120 Then — = number of revolutions of hind wheel.
Page 104 - An equation of the second degree is one in which the highest power of the unknown quantity is the second power, or square ; as, 3 x2 — 2 x = 65.
Page 90 - SUBTRACTION OF FRACTIONS is the process of finding the difference between two fractions.
Page 257 - Divide the number 60 into two such parts, that their product shall be to the sum of their squares in the ratio of 2 to 5. Ans. 20 and 40.
Page 133 - RULE. Find an expression for the value of the same unknown quantity in each of the equations, and form a new equation, by placing these values equal to each other.
Page 175 - ... and to the remainder bring down the next period for a dividend. 3. Place the double of the root already found, on the left hand of the dividend for a divisor.

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