Hard? Best exam of my lifeInteresting and nice to see someone thinking in the brighter direction :)
Can someone please explain how they solved the last question??
That one was a stumper for me....I didn't mind the majority of that exam but still....MATHS IS OVER!!!! ;D ;D ;D
oh boy this is going to be a disasterTake a deep breath...
Take a deep breath...
...and don't look at them if you really don't want to ;)
nop i will face my demons, i just want that maths mark in my signature HAHAAHAHAHAHLel up to you :P
Lel up to you :P
:p mr/ms actuarial studiesOH. Crap, I just realised you meant MY signature.
jamon is number 3 in mcq correct? isn't it b cause 1 is a straight line?
i think theres also errors in 15
and 19
21 also?
For 15, do you read the question as being charge 54 cents for ANY PART of the 30 seconds? I read it to mean you pay the 'part' of the 30 seconds that you talk; ie. half of the 54 cents for 15 seconds. I could be wrong in that reading?
For 19, in my stats course, you take the medium value not including the first and medium terms for each quartile. Is it not the same in General Maths?
21 could absolutely be different, I tried looking up how those sorts of tables work but I've never done anything like it. Could you post up your working/solutions for the questions you disagree with?
Possibly (27) (e) (iii)
Departs Melbourne at 11:30pm which is 5:30pm Dubai Time. Add a 15 hour flight and that's 8:30am Saturday?
so the way i did 19 was 54 cents per part 30 seconds or thereof
since theres 2 minutes and 15 seconds
that would equal to 2 minutes and 30 seconds cause part thereof
so 0.54 x 5 = 2.7
for general
the 5 number i think is lowest extreme, q1, median, q3, and highest extreme
for the mean one you use your calculator and use class centers
Look, that sounds right to me! I think I just read Q15 differently, but you're likely right. Would you say 19 is A?
yup since there's 9 numbers
2, 3, 3, 3, 5, 5, 8, 9, 12
median would be 5 since its the middle number
q1 would be 3+3/2 = 3
q3 would be 8+9/2 = 8.5
Ah cool cool, happy to accept that! Sorry about that, I've just learned it a bit differently in my University course. Sounds like you absolutely smashed the exam!
In question 22 of the multiple choice, each line in the box and whisker plots represents 1/4 of the data. So that means you find 1/4 of 112 = which is 28. In geography we can see that 1/2 of the class got above 30 (1/4+1/4) and seeing as they say there is the same amount that got above 30 it must mean that answer is (C) 56 ( 2 * 28 = 56) hope you get it you might be able to word it better.
hey I'm 99% sure that question 15 is D not C
Yep, after having a think about it we'll be changing that right now! Great spot
sorry if we look ungrateful for your answers, were just very anxious :(
Aha no you don't seem ungrateful at all! There were always going to be mistakes; I was relying on students like you to pick them up. Seriously, thanks for your contribution, and feel free to drop in any more!
For 15, do you read the question as being charge 54 cents for ANY PART of the 30 seconds? I read it to mean you pay the 'part' of the 30 seconds that you talk; ie. half of the 54 cents for 15 seconds. I could be wrong in that reading?
For 19, in my stats course, you take the medium value not including the first and medium terms for each quartile. Is it not the same in General Maths?
21 could absolutely be different, I tried looking up how those sorts of tables work but I've never done anything like it. Could you post up your working/solutions for the questions you disagree with?
Would Q25 of the MC not be D??
:)
anyways for question 29 b ii
wouldnt the percentage be 10% increase?
Would Q25 of the MC not be D??
Wouldn't 28. e) (ii) be 193cm, there's only 6 gaps, not 8.
Wouldn't 28. e) (ii) be 193cm, there's only 6 gaps, not 8.
Please review Q25 again.
It is stated that angle BCA is abtuse which is greater then 90.
Therefore angle ABC can be a max of 65.
Therefore angle OBC must me atleast 115.
Also 28eii,
I believe you have miss calculated it. The answer I got is 193cm^3.
You made each corner 4.05cm^3 and there is 24 corners then times 2 for the layers =193.2cm^3
question 27 interquartile
i got 36 because
q3 = 172 and q1 = 136
Can someone explain Q17? It says how much compound interest is she charged, not the total amount charged? Wouldn't it be A (or B, not sure lol but -780 the one you have)
I might have more questions yet so dont go too far! :D
Hey! Seems like our answers are only 1cm off; Because I was reading the paper off my computer, it was harder to see exactly where the lines on the graph were. You'd get the mark either way!
also is 28a i put 4/37 because 33 silver coins were picked with 4 gold coins meaning theres a total of 37 coins?
Hey Hayden! Thanks for the post, and welcome to the forums; I think we've already fixed both of these issues, but let me know if we haven't! I smashed out the answers so quickly that issues were always going to arise, congratulations on spotting them! Also, I have to say, the method you used to answer that angle question is really, really nice,
Thanks mate,
It's pretty hard to do some questions in the exam without a calculate so you learn to take new approaches 😊
Ahahahahhahahaahah absolutely stellar job
heyyyyy everyone that was a great exam....i just went through your answers and i have a few questions:
- i am 99% sure question 21 is D
- and question 23 is also D
thats according to my calculations anyways...i can send my working if u want
heyyyyy everyone that was a great exam....i just went through your answers and i have a few questions:
- i am 99% sure question 21 is D
- and question 23 is also D
thats according to my calculations anyways...i can send my working if u want
Wouldnt question 7 be A and not B as categorical nominal is the one you can't put in order e.g dog, cat, rabbit, and categorical ordinal is the one you can put in order e.g small medium large ?
And for question 26.) b, wouldnt the answer be
1x over 3y to the power of -4 and not 1x over 3y to the power of 4 ? As you were supposed to do 1-5 to the y's power and not 5-1, because y to the power of 1 is at the top and y to the power of 5 is the denominator?
Just really curious cause thats what i put in for my answers :)
(just to clarify, I'm not saying im right pls correct if wrong ty)
For 36e, would you not have to add four weeks pay on top of the holiday loading?
28eii. are you sure that's right? I got (10x15x3)-(pi x 2.5^2 x 3) x 12 = 193cm^3 - correct me if im wrong thanks !!
30bii. for this question, shouldnt it be [3072 x 1024 x 1024]/8 --> then with that you divide by 1000 x 1000 to get it to mb instead of MB, and then also shouldn't you divide what you get from that by /7 and then by /60 to get it to minutes? so the answer should be like 1mbps i think
are these wrong or right, im pretty sure they're right tho
(just to clarify, I'm not saying im right pls correct if wrong ty)
For 36e, would you not have to add four weeks pay on top of the holiday loading?
28eii. are you sure that's right? I got (10x15x3)-(pi x 2.5^2 x 3) x 12 = 193cm^3 - correct me if im wrong thanks !!
30bii. for this question, shouldnt it be [3072 x 1024 x 1024]/8 --> then with that you divide by 1000 x 1000 to get it to mb instead of MB, and then also shouldn't you divide what you get from that by /7 and then by /60 to get it to minutes? so the answer should be like 1mbps i think
are these wrong or right, im pretty sure they're right tho
Hey! 21 definitely may be D, I have no idea how to do those kinds of questions. As for 23, I think that's debatable; I understood the question to be a smoker OR male, not male AND a smoker. So, you take the probability of being a male non-smoker and a female-smoker. Really not sure what they intended with that question, but I went with a strict reading of OR.i think i know what u mean.....i just thought that the probability of being a smoker OR male meant prob of being smoker (male and female=156) PLUS the prob of being male (264). :) :)
i think i know what u mean.....i just thought that the probability of being a smoker OR male meant prob of being smoker (male and female=156) PLUS the prob of being male (264). :) :)
For sure, and I don't think we'll know what BOSTES was going for until they release solutions. Ah well, let's hope you're right
QUICK NOTE: I did 4U maths, so I thought I would be fine answering the General Paper. Looks like I may have been wrong.... great job to everyone on here for getting through what appears to be a difficult course! If you have any further corrections, hit 'reply' and let me know what you think!
OH MY WOWS. That exam.
Overall I think I did okay, but the damn cake question!! Could not workthat out for the life of me!! And the 5 marker about the playground! Wow!
Then you go to questions - 2 coins a flipped whats the chance that one is heads one is tails and I am just like **facepalm** this could be done by a primary kid.
A very inconsistent exam, in my opinion.
Oh another thing,
for 29eii, im pretty sure you actually have to find the gradient; (y2-y1/x2-x1) so like {(1900,60) (1980,80)} - (80-60/1980-1900) = 0.25
and then i commented "the gradient increases at a linear rate of 0.25, meaning that life expectancy increases by 3 months every year." (3 months because 0.25 x 12)
I think that's right, idk correct me if im wrong
Oh another thing,
for 29eii, im pretty sure you actually have to find the gradient; (y2-y1/x2-x1) so like {(1900,60) (1980,80)} - (80-60/1980-1900) = 0.25
and then i commented "the gradient increases at a linear rate of 0.25, meaning that life expectancy increases by 3 months every year." (3 months because 0.25 x 12)
I think that's right, idk correct me if im wrong
i wrote that for every year your born later, your life expectancy increases by 0.25
yeah im pretty sure that's right, but idk; anyway this guy is doing really well in general for a 4u student, i coulda guessed there'd be a few mistakes, but idk i might be wrong i dont wanna jump the gun
i did somethign similar for the cake one
15x10x6-6xPiex2.5^2x6 = 193
hello! sorry to be a hassle but for Q7, wouldn't it be A, as nominal is when order is not indicated & i feel that B indicates order as small->medium->large? sorry if i'm wrong, just thought i'd check & thanks for all your answers, it's very much appreciated (:
hello! sorry just one more thing, with question 23, would it be d) 87%? since it's smoker OR male, doesn't OR = +, so then 156/485 + 264/485 = 420/485 = 86.5979%? sorry i might be wrong, i just wanted to get some feedback was all (: thanks again for your answers
And for 23 is it not 87% which is d
For Q. 26 e) shouldn't it be 1.175*4904 = 5762.2 - because its the pay for the 4 weeks+loading, not just the loading
Wouldnt question 7 be A and not B as categorical nominal is the one you can't put in order e.g dog, cat, rabbit, and categorical ordinal is the one you can put in order e.g small medium large ?
And for question 26.) b, wouldnt the answer be
1x over 3y to the power of -4 and not 1x over 3y to the power of 4 ? As you were supposed to do 1-5 to the y's power and not 5-1, because y to the power of 1 is at the top and y to the power of 5 is the denominator?
Just really curious cause thats what i put in for my answers :)
Im stuck on question 30 b (ii) i didn't get the working outYou're probably right for b) (ii)
For the last question d (ii) the question mentioned 'solve it simultaneously' which meant you solve it using simultaneous equation
i think i did the same thing in the exam for question 30 b (ii) i did ANS x 1024 x 1024 x 8 divide by 1 000 000 i not sure if it correct
Mod Edit: Posts merged, try not to double post! :)