Solve this exponential equation: 5(4^3y-5)=40

Question

anonymous · Answer

if your solving for why the answer would be y=13/64 I believe

ganeshie8 · Answer

start by dividing 5 both sides

anonymous · Answer

The first step is to divide each side by 5

This will give you 4^3y-5 = 8

anonymous · Answer

You can then add 5 to each side

This will give you 4^3y = 13

anonymous · Answer

The power of 3 is very tricky. You will want to cube root both sides to get rid of it.

This will give you 4y = cuberoot(13)
This may be the required answer because simplifying this is going to have a lot of decimals and get really messy.
Does this make sense?

anonymous · Answer

The answer should be 13/6. I don't understand why I would cuberoot @KirbyLegs. Why can't I just take the log of both sides?

anonymous · Answer

she tooooooold you ;x

anonymous · Answer

LOL

hartnn · Answer

the question is actually

anonymous · Answer

When i did the solution, y=5.410459404 , which is clearly the wrong answer. I don't know what I did wrong :$

hartnn · Answer

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