posted by .

solve the equation 4^2x-2b= (1/8)^x+b for x in terms of b.

1) x=b/7
2) x=7b
3) x=-7b
4)x= -b/7

  • Math -

    I will assume that you meant to say ....

    4^(2x-2b) = (1/8)^(x+b)
    The way you typed it, solving for b would be a total nightmare.

    2^(4x - 4b) = 2^(-3x - 3b)
    4x - 4b = -3x - 3b
    7x = b
    x = b/7

    (remember 4= 2^2 , and 1/8 = 1/2^3= 2^-3 )

  • Math -

    Thank you so much Reiny =]

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math,help!!!!

    How do i do thois problem?Please help. Problem #1 solve the system by subtraction. 5x-3y=13 4x-3y=11 Subtract the lower equation's left and right terms from the upper equation's corresponding terms. The first step will get you this:
  2. inequity question

    Can someone show me how to solve the inequality below?
  3. Precalc

    I have a couple questions, I need to know how to solve these type of problems. X^2 -4< X + 16 5/n+2 - 5/n = 2/3n 2X^3-x^2-6X + 1/ X^2 + 5x - 8 1) rearragne the terms to get x^2-x-20<0 (x-5)(x+4)<0 which means that one term …
  4. Algebra-please check my answers

    Solve the equation by expressing each side as a power of the same base and then equating exponents. 9^(x - 9)/8= sqrt of 9 i got 13 4^(x + 10) = 8^(x - 6) i got 38 Solve the exponential equation. Express the solution set in terms of …
  5. Algebra III / Core II

    It has been since the beginning of last year since I last did this math and the teacher I currently have is a sub and doesn't know what the heck she's doing either - so if anyone can help me, that'd be oh so amazing! a. Solve d=rt …
  6. calculus

    Please help me solve this equation. log[2](3)+log[2](x)=log[2](5)+log[2](x-2) 1. Solve equation by setting up algebraically. 2. Use appropriate properties of Logarithm to reduce the number of logarithmic terms to only one. 3. Solve …
  7. maths

    Need help to know what to do: solve the equation 9/(x=7)=4/(x-3) My book tells me to cross multiply, then move all the terms in x and the terms without x on separate sides of the equation. then divide by the coefficient of x. How do …
  8. Math Algebra 2

    How do I put log in a TI-84 calculator. #1.Express the logarithm in terms of log2M and log2N: log2(MN)4 #2. Express the logarithm in terms of log2M and log2N: log2 the cube root of M2N #3. Express the logarithm in terms of log2M and …
  9. Math Algebra 2

    #4. Express the logarithm in terms of log2M and log2N: log2 1/MN #5. Simplify: log4 3 - log4 48 #6. Solve the equation: loga x = 3/2loga 9 + loga 2 #7. Solve the equation: logb (x2 + 7) = 2/3logb 64 #8. Solve the equation: loga (3x …
  10. Math

    Use the quadratic formula to solve the equation for x in terms of y and y in terms of x. (Enter your answers as a comma-separated list. If there is no solution, enter NO SOLUTION.) 2x^2 + 7xy + 1 − y^2 = 0 (a) x in terms of y …

More Similar Questions