Key to Elementary Treatise on AlgebraB.B. Mussey, 1842 - 56 σελίδες |
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Σελίδα 26
... represents the number , gives 7x 5x 10 7 +5 . = From this equation we find - 350 . Changing the sign of x in the ... represent the fraction , the question gives y x x - 2 ; and y 2 = 18 . y x = - 3 , and y = -13 . From these equations we ...
... represents the number , gives 7x 5x 10 7 +5 . = From this equation we find - 350 . Changing the sign of x in the ... represent the fraction , the question gives y x x - 2 ; and y 2 = 18 . y x = - 3 , and y = -13 . From these equations we ...
Σελίδα 27
... represent the number of gallons , which flow through the cocks A and B , respectively , in a minute . Then , 5x + 3y = 24 , and 7x + 5y = 32 . These equations give x 6 gallons , and y - 2 gallons . Changing the sign of y in the original ...
... represent the number of gallons , which flow through the cocks A and B , respectively , in a minute . Then , 5x + 3y = 24 , and 7x + 5y = 32 . These equations give x 6 gallons , and y - 2 gallons . Changing the sign of y in the original ...
Σελίδα 28
... represent the number killed to - day , and y the number killed yesterday , we have 3 x x y 3 x 5 . y = 2 = 1 + 5 , and y 2 3 - These equations become , by multiplication and transposition , 2y = 30 , and 3 x — · 2 y = 10 , in which the ...
... represent the number killed to - day , and y the number killed yesterday , we have 3 x x y 3 x 5 . y = 2 = 1 + 5 , and y 2 3 - These equations become , by multiplication and transposition , 2y = 30 , and 3 x — · 2 y = 10 , in which the ...
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