Question

HELP please I need to finish it before midnight.

Answer 1

`x=-(9ln(15))/(2ln(11)-ln(15))`

Explanation:

`11^(-2x)=15^(x+9)`

`e^((-2x)ln(11))=e^{(x+9)ln(15)`

`-2xln(11)=(x+9)ln(15)`

`-2xln(11)=xln(15)+9ln(15)`

`-2xln(11)-xln(15)=9ln(15)`

`x(-2ln(11)-ln(15))=9ln(15)`

`x=(9ln(15))/(-2ln(11)-ln(15))`

`x=-(9ln(15))/(2ln(11)-ln(15))`