Int 2 maths

for the simultaneous equation i got that they were overcharged £10. Child = 299 & Adult = 425!

For the length of the arc question.. Was it just: angle/360 x curcumference (was 40 or something) ??????/

What was the answer to the surds question??

Also i believe it wasnt that, although i did make the same mistake as you but i think you were meant to work out the diameter by rearranging the circumference formula.

I got 2, since it was (square rt)2*3 + (square rt)2*2 - (square rt)6

= (square rt)6 + (square rt)4 - (square rt)6

= the +6 and -6 cancel each other out, and the square root of 4 = 2, so the answer you're left with is 2.

I got 2, since it was (square rt)2*3 + (square rt)2*2 - (square rt)6

= (square rt)6 + (square rt)4 - (square rt)6

= the +6 and -6 cancel each other out, and the square root of 4 = 2, so the answer you're left with is 2.

It was 37.. as it came to 36.86 so it was 37, and i just double checked! Sorry if i panick yous guys!

Also i believe it wasnt that, although i did make the same mistake as you but i think you were meant to work out the diameter by rearranging the circumference formula.

The formula for the length of an arc is (x/360)*pi*D. In this formula the pi*D is to find the circumference. So you could replace the pi*D with the circumference and get the same answer.

eg. to find the diameter = circumference/pi, since pi*D = circumference... so you could do it either way.

No, you dont need the diameter to work out the length. It was 2 marks, 1 fo subsituting it into a formula and 1 for the correct answer!

I brought the papers out of the exam with me so im going to work at them. God, I looked at paper 1 and actually had a year rolling down my face at one point because of the frustration. Paper 2 was much easier. Cannot believe it! 3 exams to go, higher human bio, higher history and int 2 Spanish. Cannot wait until they're over!!

So do you think i will get a mark maybe for putting

angle/360 x pie x circum?

or will i not get it cause i added pie?

Would I get the marks if I did the working out and wrote the answer as square root 4?

I think you'd lose one mark because it asks for it in its simplest form, which is 2. You'd get all other marks though I think

I think you'd lose one mark because it asks for it in its simplest form, which is 2. You'd get all other marks though I think

I did something weird I found 15% of 100 then 15% of 75 and so on! anyone else do this?
Oh god I can't even remember! what did everyone get for their change the subject question?

Yes thats exactly what i did! Except i found 15% of 1000, wonder if they'll give us any marks for it :s haha

Paper one was a complete fail though, lost at least 10 marks in it. Also what did everyone get for the Yacht and the Canoe question (find the height of the cliff) i got 75 something metres, it was sooo hard!!

I got 75 metres! Did you use sine rule twice?? I thought it was ok, was in a previous past paper something similar so i knew what to do!

Yes I did! I used it twice, was getting negative answers at first so i thought it was wrong, then realised i'd not closed the bracket on the calculator haha, then i got 75 (: but yes thats a relief! My friend got 100 and something, so i thought i was wrong ha.