log8(28k-20)+15=18

FizeauV

FizeauV

Answered question

2020-11-10

log8(28k20)+15=18

Answer & Explanation

Margot Mill

Margot Mill

Skilled2020-11-11Added 106 answers

Subtract 15 from both sides: log8(28k20)=3 
In exponential form, type:
83=28k−20 
512=28k−20 
Add 20 to both sides: 532=28k 
Divide both sides by 28: 19=k 
or 
k=19

Jeffrey Jordon

Jeffrey Jordon

Expert2021-08-11Added 2605 answers

I hope my video will help you

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