Αναζήτηση Εικόνες Χάρτες Play YouTube Ειδήσεις Gmail Drive Περισσότερα »
Είσοδος
 Βιβλία Βιβλία If the product of two quantities is equal to the product of two others, either two may be made the extremes of a proportion and the other two the means. For, if ad = bc, then, divide by bd. т~, - г~;« bd bd а с 01 6 = 5 New School Algebra - Σελίδα 310
των G.A. Wentworth - 1901
Πλήρης προβολή - Σχετικά με αυτό το βιβλίο ## Durell's School Algebra

Fletcher Durell - 1914 - 523 σελίδες
...may be combined in the form x : у : z = a : b : c. 264. Equal Products made into a Proportion. // the product of two quantities is equal to the product of two other quantities, either two may be made the means, and the other two the extremes of a proportion.... ## Robbin's New Plane Geometry

Edward Rutledge Robbins - 1915 - 264 σελίδες
...Multiply by the common denoinioy nator by and obtain, ay = bx (Ax. 3). QED PROPOSITION II. THEOREM 281. If the product of two quantities is equal to the product of two others, one pair may be made the extremes of a proportion and the other pair the means. Given : ay = bx. To... ## Durell's Algebra ...

Fletcher Durell - 1915
...с may be combined in the form x : у : г = a : b : c. 128. Equal Products made into a Proportion. If the product of two quantities is equal to the product of two other quantities, either two may be made the means, and the other two the extremes of a proportion.... ## Essentials of Plane Geometry

David Eugene Smith - 1923 - 296 σελίδες
...the means. 2. If. the two antecedents of a proportion are equal, the two consequents are equal. 3. If the product of two quantities is equal to the product...either two may be made the extremes of a proportion in which the other two are made the means. 4. If four quantities are in proportion, they are in proportion... ## New Elementary Algebra Embracing the First Principles of the Science

Charles Davies - 1891 - 294 σελίδες
...to each other that AXD = BXC, we shall also have — = — ; AC and hence A : B : : C: D ; that is, If the product of two quantities is equal to the product of two other quantities, two of them may be made the extremes, and the other two the means, of a proportion.... ## Ray's Algebra, Part First: On the Analytic and Inductive Methods of ...

Joseph Ray - 1848 - 240 σελίδες
...not equal to 8X2, we infer that the proportion isfal4c. ART. 245.— PROPOSITION II.— Conversely, If the product of two quantities is equal to the product of two others, two of them may be made the means, and the other two the extremes of a proportion. Let be=ad. Dividing... ## Ray's Algebra, Part First: On the Analytic and Inductive Methods of ...

Joseph Ray - 1848 - 240 σελίδες
...not equal to 8X2, we infer that the proportion is false. ART. 245.— PROPOSITION II.— Conversely, If the product of two quantities is equal to the product of two others, two of them may be made the means, and the other two the extremes of a proportion. Let bc=ad. Dividing...