 Of three numbers in geometrical progression, the sum of the first and second exceeds the third by 3, and the sum of the first and third exceeds the second by 21.  New School Algebra - Σελίδα 264των George Albert Wentworth - 1898 - 407 σελίδεςΠλήρης προβολή - Σχετικά με αυτό το βιβλίο
 | Miles Bland - 1821 - 898 σελίδες
...shillings more than the worst. What were their daily wages ? Ans. 5, 7, and 9 shillings. 8. There are three numbers in geometrical progression ; the sum of the first and second of which is 9, and the sum of the first and third is 15. Required the numbers. Ans. 3, 6, 12. 9. There... | |
 | James Ryan - 1824 - 550 σελίδες
...between the third and fourth is 4 ; What are the numbers ? Ans. 54, 18, 6, and 2. Prob. 12. There are three numbers in geometrical progression ; the sum of the first and second of which is 9, and the sum of the first and third is 15. Required the numbers. Ans. 3, 6, 12. Prob.... | |
 | Charles Tayler - 1824 - 350 σελίδες
...Find the sum of the series^ an~1 &c ..... +&n-* to w terms. ___ _ i-£ ab - ab' aa Ex. 5. There are three numbers in geometrical progression. The sum of the first and second is 15, and the sum of the first and last is 25. What are the numbers ? Let x= the first, and y —... | |
 | Miles Bland - 1824 - 404 σελίδες
...shillings more than the worst. What were their daily wages ? Ans. 5, 7, and 9 shillings. 8. There are three numbers in geometrical progression ; the sum of the first and second of which is 9> and the sum of the first and third is 15. Required the numbers. Ans. 3, 6, 12. 9- There... | |
 | James Ryan, Robert Adrain - 1824 - 542 σελίδες
...between the third and fourth is 4 ; What are the numbers ? Ans. 54, 18, C, and 2. Prob. 12. There are three numbers in geometrical progression ; the sum of the first and second of which is 9, and the sum of the first and third is 15. Required the numbers. Ans. 3, 6, 12. Prob.... | |
 | William Smyth - 1830 - 278 σελίδες
...in geometrical progression ; the first had £90 more than the last. How much had each ? 4. There are three numbers in geometrical progression, the sum of the first and second of which is, 9, and the sum of the first and third is 15. Required the numbers. 5. The sum of three... | |
 | Andrew Bell (writer on mathematics.) - 1839 - 500 σελίδες
...the solution is the system of values x = 9, and у = 36. 5. There are three numbers in equirational progression ; the sum of the first and second exceeds the third by 1, and 3 times the second is equal to twice the third : what are the numbers ? • Let x = the first,... | |
 | John D. Williams - 1840 - 634 σελίδες
...(x* — xy)= 2xy = 2S; .-. xy= 14, or y=2, and their wages were 5, 7, and 9 shillings. 53. There are three numbers in geometrical progression ; the sum of the first and second of which is 9, and the sum of the first and third is 15. Required the numbers. Let x, xy, and xy1 be... | |
 | Scottish school-book assoc - 1845 - 444 σελίδες
...be equal to the surface of the glass. Required the breadth of the frame. Ans. 4 inches. 8. There are three numbers in geometrical progression. The sum of the first and second is 10, and the difference of the second and third is 24. What are the numbers ? Ans. 2, 8, 32. 9. A... | |
 | James Wharton - 1848 - 164 σελίδες
...was 1938. How many were there in each nock ? Ans. 18, 24, 126, 1770, respectively. (83.) There are three numbers in geometrical progression, the sum of the first and second of which is 9, and the sum of the first and third is 1 5 ; required the numbers. Ans. 3, 6, 1 2. (84.)... | |
| |
