A Mathematical Solution Book Containing Systematic Solutions to Many of the Most Difficult Problems: Taken from the Leading Authors on Arithmetic and Algebra, Many Problems and Solutions from Geometry, Trigonometry and Calculus, Many Problems and Solutions from the Leading Mathematical Journals of the United States, and Many Original Problems and SolutionsKibler, 1888 - 481 σελίδες |
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Σελίδα 60
... prob . 26. ) Given { the base and the percentage CASE II . } to find the rate per cent . Formula . - P ÷ B - R , where B is the base , P the percentage and R the rate per cent . I. 1 . II.2 . 3 . III . I. 750 men is what % of 12000 men ...
... prob . 26. ) Given { the base and the percentage CASE II . } to find the rate per cent . Formula . - P ÷ B - R , where B is the base , P the percentage and R the rate per cent . I. 1 . II.2 . 3 . III . I. 750 men is what % of 12000 men ...
Σελίδα 63
... prob . 12. ) I. In a company of 87 , the children are 371 % of the women , who are 444 % of the men ; how many of each ? number of men . Then number of women . 44 % , of 444 % = . 444 % , and 37 times .443 % -163 % -number of chil- dren ...
... prob . 12. ) I. In a company of 87 , the children are 371 % of the women , who are 444 % of the men ; how many of each ? number of men . Then number of women . 44 % , of 444 % = . 444 % , and 37 times .443 % -163 % -number of chil- dren ...
Σελίδα 66
... prob . 5. ) A miller takes for toll 6 quarts from every 5 bushels of wheat ground ; what % does he take for toll . ? ( 1. 1 bu . = 32 qt . 2. 5 bu . 5 times 32 qt . = 160 qt . - II.4 . 160 qt . = 100 % , 4. 1 qt . of 100 % - % , and 5 ...
... prob . 5. ) A miller takes for toll 6 quarts from every 5 bushels of wheat ground ; what % does he take for toll . ? ( 1. 1 bu . = 32 qt . 2. 5 bu . 5 times 32 qt . = 160 qt . - II.4 . 160 qt . = 100 % , 4. 1 qt . of 100 % - % , and 5 ...
Σελίδα 70
... prob . 10. ) I. Sold cotton on commission , at 5 % ; invested the net pro- ceeds in sugar , commission , 2 % ; my whole commission was $ 210 ; what was the value of the cotton and sugar ? ( 1. ) 100 % cost of cotton . ( 2. ) ( 3. ) 5 ...
... prob . 10. ) I. Sold cotton on commission , at 5 % ; invested the net pro- ceeds in sugar , commission , 2 % ; my whole commission was $ 210 ; what was the value of the cotton and sugar ? ( 1. ) 100 % cost of cotton . ( 2. ) ( 3. ) 5 ...
Σελίδα 74
... prob . 9. ) Sold a case of hats containing 3 dozen , on which I had re- ceived a discount of 10 % and made a profit of 121 % or 37 on each hat ; what was the wholesale merchant's price per case ? ( 1. ) 374 - profit on one hat . ( 2 ...
... prob . 9. ) Sold a case of hats containing 3 dozen , on which I had re- ceived a discount of 10 % and made a profit of 121 % or 37 on each hat ; what was the wholesale merchant's price per case ? ( 1. ) 374 - profit on one hat . ( 2 ...
Συχνά εμφανιζόμενοι όροι και φράσεις
acres Algebra altitude amount annuity axis Benjamin Peirce cents chord circle circumference cone convex surface cost cows cube cubic curve cycloid cylinder Descartes diagonal diameter discount distance divided ellipse equal equation feet find the area find the length find the volume formula fraction frustum gain Geometry given hand moves past Hence horse hour hand hyperbola inches interest investment latus rectum linear side longitude lower base mathematicians mathematics method minute hand multiply nine-point circle o'clock orthocenter par value parabola parallel Peirce perpendicular plane polygon prismatoid Prob problem Professor proposition quotient radius ratio right angles rods Rule.-Multiply segment selling price senary similar triangles slant height sold solid solution sphere spherical square root straight line subtract Sylvester tangent theorem tion triangle Whence width yards
Δημοφιλή αποσπάσματα
Σελίδα 378 - If a straight line meet two straight lines, so as to make the two interior angles on the same side of it taken together less than two right angles...
Σελίδα 24 - Multiplication is the process of taking one number as many times as there are units in another.
Σελίδα 410 - Two triangles which have an angle of the one equal to an angle of the other may be placed with their equal angles in coincidence. Let ABC, ADE, be the two triangles having the common angle A ; then, ABC AB X AC...
Σελίδα 474 - And you, ye undevelopable scrolls ! Above the host wave your emblazoned rolls, Ruled for the record of his bright inventions. Ye Cubic surfaces ! by threes and nines Draw round his camp your seven-and-twenty lines — The seal of Solomon in three dimensions.
Σελίδα 196 - A sphere is a solid bounded by a curved surface, every point of which is equally distant from a point within called the center.
Σελίδα 453 - Dimensions," in which he shows, for instance, that if a fourth dimension were added to space, a closed material surface (or shell) could be turned inside out by simple flexure without either stretching or tearing.
Σελίδα 371 - Now the mathematics are peculiarly well adapted for this purpose, on the following grounds : 1. Every term is distinctly explained, and has but one meaning, and it is rarely that two words are employed to mean the same thing. 2. The first principles are self-evident, and, though derived from observation, do not require more of it than has been made by children in general. 3. The demonstration is strictly logical, taking nothing for granted except the self-evident first principles, resting nothing...
Σελίδα 453 - He was awarded the Gold Medal of the Royal Astronomical Society in 1954.
Σελίδα 359 - The hour and minute hands of a watch are together at 12 o'clock ; when are they next together ? Ans.
Σελίδα 453 - Elementary Theorems Relating to the Geometry of a Space of Three Dimensions and of Uniform Positive Curvature in the Fourth Dimension," published in Borchardt's Journal, Bd.