Thursday

September 18, 2014

September 18, 2014

Posted by **Lena** on Monday, February 16, 2009 at 6:37pm.

4^t = 8^t-1

Just by looking at it, I know that x = 3 but how would I figure this out mathematically?

- simple math -
**Reiny**, Monday, February 16, 2009 at 6:42pm4^t = (2^2)^t = 2^(2t)

8^(t-1) = (2^3)^(t-1) = 2^(3t-3)

so 2^(3t-3) = 2^(2t)

then 3t-3 = 2t

t = 3

- simple math -
**Lena**, Monday, February 16, 2009 at 6:44pmThanks so much :)

**Answer this Question**

**Related Questions**

Math - I cannot remember how to figure out this problem. "Ten friends share 3 ...

Math - I know this is simple arithmetic but i just cant seem to figure out the ...

Math - How do I figure out -144/4 to find out if it is a natural number,a whole ...

Inorganic Chemistry - Hello, I am trying to write a chemical equation for a ...

Math - A customer wants to make a tee-pee in his backyard for his children. He ...

algebra - What is the y-intercept of the line represented by the following ...

Math - How would I figure this problem out? "To rotate a figure 150 degrees you ...

Math - Ms. Pecho currently owes $637.50 in simple interest on a loan of $2500 at...

Math (Re-post) - A customer wants to make a tee-pee in his backyard for his ...

7th grade math - I hope this makes sense, but my teacher said he wants all ...