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CBSE Class 9 Answered

if 3 power x-1 =9 and 4 power y+2 =64, what is value of x /y ?
Asked by nisha_vini29 | 14 Sep, 2015, 12:27: AM
answered-by-expert Expert Answer

Hi Nisha

3 to the power of x minus 1 end exponent equals 9 space equals space 3 squared rightwards double arrow x minus 1 space equals space 2 rightwards double arrow x space equals space 3 space 4 to the power of y plus 2 end exponent equals 64 equals 4 cubed rightwards double arrow y plus 2 space equals space 3 rightwards double arrow y space equals space 1 x over y equals 3 over 1 equals 3

Answered by | 14 Sep, 2015, 12:43: PM

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