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17-01-2017
Mathematics

contestada

Which of the following choices is the common difference between the terms of this arithmetic sequence?

3x + 7y, 8x + 4y, 13x + y, 18x - 2y, 23x - 5y, ...

A. -5x - 3y
B. 3x + 7y
C. 5x - 3y
D. 5x + 3y
E. 3x - 7y

Respuesta :

17-01-2017

A.P is 3x+7y,8x+4y,13x+y.........
comman diffrence d=8x+4y-(3x+7y)
d=5x-3y
right answer is C.5x-3y

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