one last question for 20B) shouldn't it be 800cm3
because the cm3 was already given?
if im wrong im just looking for marks really sorry lol
got 85/100

and how hard do you think paper 2 is gonna be?

Reply 146

Bridderss

serenadejong

if it was a challenging paper the grade boundaries would be lower...
but in any circumstance 90/100 is an a*

yeah i was being sarcastic shes my sister sorry :o:

Reply 147

Citrus_lime

Mr M

The cube had a side length of 2 m = 200 cm.

200 x 200 x 200 = 8,000,000

22b was complete the cumulative frequency table

24iii - you needed to understand indices (to be honest, this question would not have been out of place on an AS mathematics paper)

25 mentioning Pythagoras will get you one mark

26 I worked out the prob of 2 orange sweets, the prob of 2 red sweets, the prob of 2 yellow sweets and then added them together

27 you would need to be quite clear about what you were doing to get most of the marks

Oh thank you so much! Great help!

Reply 148

serenadejong

Bridderss

yeah i was being sarcastic shes my sister sorry :o:

oh right i was gunna say lol :smile:

Reply 149

Bridderss

whoo hoo i got like 97 or 98%

Reply 150

serenadejong

scienceboy

any ideas on the usual grade boundaries for this exam?

i recon its like
85 a*
70 a
54 b
42 c
?

Reply 151

Hanpanfan

serenadejong

oh right i was gunna say lol :smile:

What is wrong with that girl, i am not her sister, what is your problem back off

Reply 152

JinxedOut

I'm quite angry, basically the paper was absolutely fine. But just before we went in, this girl told me that cumulative frequency you plot from the mid points, and frequency polygon you do higher, so I've plotted them wrong. I'm pretty angry, as I'd helped her a lot and just as she was walking in someone told her she got it wrong (meaning in the exam she got it right) but I wasn't to know :\ OHKAY I'll stop complaining, but it meant I got the median and interquartile range different but right for my graph, how many points will I lose? The frequency is worth 2 and the other 5 in total, will I lose all 7.
They're the only marks I've lost though I think :\ still annoying.

Reply 153

ExplosiveSam

Can somebody please explain 27?
Also for 25B I worked and put with my working out x =6 or x = -2 but then I crossed out X =-2 because it didn't seem like X could be -2 when you put it into the eqautions on triangle, however I left the x = -2 in my working outs. Would I only get 3/4?

Also for 16 I originally put unsimplified version of the correct answer but in the last minute I simplfied it and accidently put 3 1/3 instead 3 2/3 would I get 2/3 for this question?

Can somebody also explain how you would do 25A?

Reply 154

serenadejong

Hanpanfan

What is wrong with that girl, i am not her sister, what is your problem back off

what are you on about?

Reply 155

Bridderss

Hanpanfan

What is wrong with that girl, i am not her sister, what is your problem back off

i definitly think we are...you know what hannah you are sooo hilarious! :woo:

Reply 156

ExplosiveSam

Can somebody please explain 27?
Also for 25B I worked and put with my working out x =6 or x = -2 but then I crossed out X =-2 on my answer section because it didn't seem like X could be -2 when you put it into the eqautions on the triangle, however I left the x = -2 in my working outs. Would I only get 3/4?

Also for 16 I originally put unsimplified version of the correct answer but in the last minute I simplfied it and accidently put 3 1/3 instead 3 2/3 would I get 2/3 for this question?

Can somebody also explain how you would do 25A?