However, I do have one stupid question on how do I calculate 3 over the square root 0.343 and get the answer 0.70 please? I have tried everything on the calculator.

Thank you so much for these lectures. My problem is with question understanding as I have the knowledge just can’t seem to pass! Hopefully this time I’ll be more prepared, this is so much better than seeing the answers on a piece of paper.

I do have 1 question, in bii) will we get two marks just for saying the price will be lower or do we need to expand on that to get the full two marks?

Many thanks again for these lectures. Open tuition has been a dream!

kimberlyw says

Dear John,

Thank you very much for the lecture.

However, I do have one stupid question on how do I calculate 3 over the square root 0.343 and get the answer 0.70 please? I have tried everything on the calculator.

Thanks

John Moffat says

But nowhere is 3 over the square root of 0.343 relevant!

What is needed is the cube root of 0.343, and this is equal to 0.7

(We need the cube root, because 8 involves doubling 3 times)

yvonec says

Thank you so much for this.This is very helpful

John Moffat says

You are welcome 馃檪

Joanne says

Thank you so much for these lectures. My problem is with question understanding as I have the knowledge just can’t seem to pass! Hopefully this time I’ll be more prepared, this is so much better than seeing the answers on a piece of paper.

I do have 1 question, in bii) will we get two marks just for saying the price will be lower or do we need to expand on that to get the full two marks?

Many thanks again for these lectures. Open tuition has been a dream!

John Moffat says

Thanks a lot for your comments 馃檪

(and please do tell your friends – the more people use us then the more we will be able to provide on the website)

In answer to your question, you would get one mark for saying it will be lower, but for the two marks you need to say why 馃檪

Joanne says

I thought that would be the case, thank you for clarifying!

I have already recommended to a few people, hopefully they are finding it as useful as I am 馃檪

John Moffat says

Thank you very much 馃檪

Have a good evening.