Solve math problems step-by-step with Cymath's math solving app.

Restricted Access. We may pursue legal actions over unauthorized uses of this API.\"Obtén

Question 588150: log (base 9) (x-5)+log (base 9) (x+3)=1 Answer by lwsshak3 (11628) (Show Source):

Restricted Access. We may pursue legal actions over unauthorized uses of this API.\"Get

9x-5=4 9x − 5 = 4 ... Restricted Access. We may pursue legal actions over unauthorized uses of this API.

Question 362852: hi how would i go about solving 9^ (x-5)=81^ (x-7) for logarithms i know that the 81 would turn to 9 to have a common base but im not sure what else to do with the powers?

You can put this solution on YOUR website! 9^ (x)- 5 (3^x) +6 =0 (hint let y = 3^x) , There is a rule of exponents for that. Your hinted substitution: , which is factorable into.... Either y=2 OR y=3 Reversing the substitution done, Either Or Whatever base you want, find logarithms of both sides for each choice of solution. , I skipped a step.

Algebra, math homework solvers, lessons and free tutors online.Pre-algebra, Algebra I, Algebra II, Geometry, Physics. Created by our FREE tutors. Solvers with work shown, write algebra lessons, help you solve your homework problems. Interactive solvers for algebra word problems. Ask questions on our question board. Created by the people. Can you help?

You can put this solution on YOUR website! 4x + 5 (7x-3) = 9 (x-5) 4x + 35x - 15 = 9x - 45 (Distribute) 39x - 15 = 9x - 45 (Simplify) -9x +15 -9x +15 (Combine Like Terms) 30x = -30 (Simplify) /30 /30 (Divide both sides) x = -1 (Answer) Any more questions? Message me! -Megan (Zoomkaboom4)

You can put this solution on YOUR website! 3/5 = 9/x cross multiplying: 3x = 5*9 x = 5*3 x = 15