Maths Homework Help !! Urgent

The loudness, L decibels, of the music at a disco varies inversely as the square of the distance, d metres, from the speakers.

Sam and Kate were dancing 1.5 metres from the speakers. If the move to a position 3 metres from the speakers what will be the effect on the loudness?


HELP !!!
This is a proportion question !! HELP !!!

 

30 decibels?
sorry ive got no idea lol i suck balls at maths well that kinda maths im only 13 an if u r as well... then JEEZ ur smart

 

Im 15. lol. Although im in the top maths class.

I think the answer should be something like 0.691111...

 

i wud say 0.677 decibals

 

I am only 13 in 8th grade also on top math class (algebra 1) I dont know exactly how much the decibels decrease but they go down below 30. I

 

It'll be half of what it was if it varies inversely.

 

i don't know but i think its 4.5?

 

No. It's definitely half.

Locked, PM me if you have questions.

 

No, it would be 1/4, because it's inversely proportional to the square.

 

Didn't read square. D:

 

Yea, it's 1/4.