Archive
14th of September 2015
Mathematics
Q:

if 3 power x-1 =9 and 4 power y+2 =64, what is value of x /y ?

Nisha_vini29 - CBSE - Class IX

Monday, September 14, 2015 at 00:27:AM

A:

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

Monday, September 14, 2015 at 12:43:PM