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Σελίδα 246 - These are usually accounted six in number, viz. the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Wedge, and the Screw.
Σελίδα 157 - But if any payments be made before one year's interest hath accrued, then compute the interest on the principal sum due on the obligation, for one year, add- it to the principal, and compute the interest on the sum paid, from the time it was paid up to the end of the year; add it to the sum paid, and deduct that sum from the principal and interest, added as...
Σελίδα 166 - Multiply each debt by its term of credit, and divide the sum of the products by the sum of the debts. The quotient will be the average term of credit.
Σελίδα 66 - To reduce a mixed number to an improper fraction. Multiply the whole number by the denominator of the fraction, and to the product add the given numerator.
Σελίδα 339 - If four magnitudes are in proportion, the product of the two extremes is equal to the product of the two means.
Σελίδα 209 - The area of a triangle is equal to half the product of its base by its altitude.
Σελίδα 299 - Cubic or Solid Measure. The unit of cubic measure is the cube of the metre, called the stere, value about 35.3171 cubic feet. Weight. The unit of weight is the weight of a cubic centi-metre of distilled water, called the gramme, value about 15.434 grains. The new system of weights and measures is not yet employed universally, except among the learned. SPAIN, SPANISH AMERICA, AND SPANISH COLONIES. Foot, 11.128 inches. Vara, or yard, 33.384 inches. Common league 4.291 miles. Fanega, -^ of a cahiz,...
Σελίδα 71 - ... be reduced to a common denominator. We find also the following rule to reduce them to a common denominator : multiply all the denominators together, for a common denominator, and then multiply each numerator by all the denominators except its own. XX. This seems a proper place to introduce some contractions in division. If 24 barrels of flour cost 192 dollars, what is that a barrel?
Σελίδα 68 - To reduce an improper fraction to a whole, or mixed number. Divide the numerator by the denominator, and the quotient will be the whole, or mixed number required.