Homework Help: Algebra help 2

Posted by Shawn on Monday, December 1, 2008 at 2:29pm.

Where appropriate, include the approximation to the nearest ten-thousandth.
27.) log x = -3
I have the answer as -3

28.) 7 ^(4-9x)= 49 I have the answer as 2
29.) 8^x =5.2 not sure
30.) 1n x=5/8 not sure

Are these answers right?

Algebra help 2 - bobpursley, Monday, December 1, 2008 at 2:37pm
27. Nope.

what is the log of 1/1000?

28. log base 7 each side..
4-9x=2
solve for x.

On the last two, I see no easy way to approximate. I will think on them.
Algebra help 2 - Shawn, Monday, December 1, 2008 at 3:19pm
27.) x=1
28.) I have x= 2/9
Not sure about the last two

29.) 8^x =5.2 not sure
30.) 1n x=5/8 not sure

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