Algebra: First Course

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Century Company, 1913 - Algebra - 283 pages

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Page 144 - PERIPHERY of a circle is its entire bounding line ; or it is a curved line, all points of which are equally distant from a point within called the centre.
Page 138 - The area of a parallelogram is equal to the product of its base and its height: A = bx h.
Page 142 - The area of a trapezoid is equal to one.half the product of its altitude and the sum of its bases.
Page 11 - Both terms of a fraction may be multiplied by the same number without changing the value of the fraction.
Page 196 - Two workmen can do a piece of work in 6 days. How long will it take each of them to do the work, if it takes one 5 days longer than the other ? 19.
Page 122 - RULE. Transpose all the terms that involve the unknown quantity to one side of the equation, and the known terms to the other...
Page 116 - Two men start from points 100 miles apart and travel toward each other, one at the rate of 15 miles an hour, and the other at the rate of 10 miles an hour. After how many hours will they meet, and how far will their point of meeting be from the starting point of the first ? 20.
Page 88 - If an expression within a parenthesis is preceded by a minus sign, the parenthesis may be removed ; but the sign of each term in the parenthesis must be changed; the sign + to — and the sign — to +. 155.
Page 193 - If two chords intersect within a circle, the product of the segments of one chord is equal to the product of the segments of the other chord.
Page 39 - ... the sum of the first and second, what is the number of degrees in each angle of the triangle, both interior and exterior?

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