Tuesday

September 30, 2014

September 30, 2014

Posted by **helen** on Thursday, November 3, 2011 at 2:46pm.

- maths -
**Steve**, Thursday, November 3, 2011 at 6:19pmsince 32 = 2^5,

sqrt(32) = 32^(1/2) = (2^5)^(1/2) = 2^(5/2)

16^(x-1) = 2 * 2^(5/2) = 2^(1 + 5/2) = 2^(7/2)

16 = 2^4

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

so,

4x-4 = 7/2

8x-8 = 7

8x = 15

x = 15/8

**Answer this Question**

**Related Questions**

Math - Just need some help... Directions: Multiply or raise to the power as ...

Algebra - Use the quadratic formula to solve the equation. Give exact answers: ...

MATH - Which expression is a polynomial???? A: 11 0ver the square root of x B: ...

Algebra - Solve 2+ the square root of 4-x=x what is your question? ok lets start...

math - which of the functions,P,H,L,R, is a polynomial.The following are a ...

maths - Consider the equation x(square) + 4px + 2q = 0 where p and q are real ...

Math simplifying mixed radicals - Please help me simplify these following mixed ...

Algebra - Rationalize each expression by building perfect nth root factors for ...

algebra - 1.)correct 2.)wrong---> the first term is wrong 4(3a^2)^2 = 36a^4 3...

Math ~CHECK MY ANSWER~ - 1) Which of these is a rational number? a. Pi b. Square...