Ccea additional maths

Original post by jcm222

Yeah I wasnt sure about LCM either nor the final question. What was the answer for LCM?

Reply 46

the lowest common multiple question was 132 and 60 so the answer was 660 as 660/10=60 and 660/5=132

Reply 47

Original post by Vincent Harkin

the lowest common multiple question was 132 and 60 so the answer was 660 as 660/10=60 and 660/5=132

What did you get for the rabbit question?

Reply 48

i cant remember. did anybody find the histogram question hard

Reply 49

Original post by jkpmc

What did you get for the rabbit question?

I got 400 and something (it was over 450, I think) and I got a decimal answer so had to round it.

Original post by jcm222

I had no idea how to do the last question as well.
I even tried using logarithms, but to no avail.
It turns out that it was quite easy:

(2/3^a)^b = 3 x 2^ a+c

Correct me if I'm wrong, but don't the solutions: a= -1 b=1 c=0 work?
Don't know why I didn't think of using 0 as an index. It would have helped a lot

Also, how on Earth were you supposed to estimate the Median? I ended up using the complex (ish) AdMaths method and got 1092. I doubt they'd give me marks for that, would they?

(edited 11 years ago)

Reply 50

jcm222

487 rabbits. LCM 330 i got

Reply 51

yes i got 487 rabbits but im pretty sure it is definitely 660 LCM. Did everyone get 8.75 for the height of tree

Reply 52

Yes, I got 487 Rabbits.
I got 660 as the LCM also.
I don't remember working out the height of the tree... oh dear. Did you not have to work out the angle of elevation, or was that another question?

What did everyone get for the cars and garages question? I got 9. Not entirely sure how, so my quality of written communication definitely wasn't good.

Reply 53

sorry it was the angle of elevation not the height and i got 8.75 degrees. for the cars one i think i got 4 because 15 was 3/4 which is 20 and 20 was 5/6 which is 24 and 24-20=4?

Reply 54

Original post by Vincent Harkin

sorry it was the angle of elevation not the height and i got 8.75 degrees. for the cars one i think i got 4 because 15 was 3/4 which is 20 and 20 was 5/6 which is 24 and 24-20=4?

You're probably right. I had no idea what I was doing for the first question. I had a Venn Diagram and everything, but it still confused me.
For the angle of elevation, I definitely got the 8.75 degrees part, but I can't remember if I put 8.75 or 18.75

Reply 55

what mark do you think we will need out of 100 to get an A*

Reply 56

Original post by jkpmc

what mark do you think we will need out of 100 to get an A*

90% probably. 90/100 that is.

Does anyone know what the Frequency Density per square thing was? I'm pretty sure I did that wrongly.

(edited 11 years ago)

Reply 57

was that Q2) it said what is the minimum value for the box if its dimensions is 1.4, 0.8, 1.2 to the nearest 0.1. i did 1.35x0.75x1.15=1.164375(1.16)

Reply 58

Original post by TheSilentFez

90% probably. 90/100 that is.

Does anyone know what the Frequency Density per square thing was? I'm pretty sure I did that wrongly.

I got each square was equal to 10 parcels. What was the median?

(edited 11 years ago)

Reply 59