Solve for x
asked Dec 10, 2015 in Algebra 2 Answers by anonymous

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:

To avoid this verification in future, please log in or register.

2 Answers

27 is 3^3 and 9 is 3^2, so 3^3(2x-1)=3^2(10x+2); 3(2x-1)=2(10x+2); 6x-3=20x+4; 14x=-7, x=-1/2.

CHECK: 27^-2=9^-3 or 1/27^2=1/9^3; taking square roots of each side: 1/27=1/9^(3/2)=1/3^3=1/27.

answered Dec 11, 2015 by Rod Top Rated User (442,220 points)

Given 27^(2x-1)=9^(10x+2)
3^(3(2x-1))=3^(2(10x+2))
3(2x-1)=2( 10x+2)
6x-3=20x+4
-4-3=20x-6x
-7 = 14x
x = -7/14
x = -1/2

Pre Algebra Help

 

answered Dec 16, 2015 by John Marsh Level 8 User (30,400 points)

Related questions

0 answers
asked Apr 7, 2013 in Algebra 1 Answers by anonymous | 60 views
0 answers
asked Sep 30, 2012 in Trigonometry Answers by anonymous | 192 views
1 answer
Welcome to MathHomeworkAnswers.org, where students, teachers and math enthusiasts can ask and answer any math question. Get help and answers to any math problem including algebra, trigonometry, geometry, calculus, trigonometry, fractions, solving expression, simplifying expressions and more. Get answers to math questions. Help is always 100% free!
78,519 questions
82,359 answers
1,900 comments
63,331 users