* Maths paper 2 (Ordinary) tips / discussion / aftermath * (1 thread only please)

soccymonster

xaoifsx wrote: »

im excatly the same!! i usually can't do it but i did it with perfection today!:D

I was suspicious tbh :P...

floutingmaxims

Looks like im the only one on the fail wagon

xaoifsx

soccymonster wrote: »

I was suspicious tbh :P...

yes i was at first..but then i thought back to a question that i did in the papers and there was a question sorta like it..apart from the letter arranging part..i felt i was so lucky with this question!!

Griffen262

babynice wrote: »

In the middle of paper 2 I realised that I never put the question number on any of my graphs in paper 1. I left the graphs in the with the corresponding questions but does this matter?

Ha! Only realised i never did this today.Ara, Im sure they can tell the difference between a circle and Cumulative frequency graph..

flyaway.

soccymonster wrote: »

Regards probability actually..... I was gonna do it as a last resort because it's either wrong or right and i usually get it wrong . But ended up doing it as an extra question anyways. But was it ridiculousy easy? Coz like.. I had it done in 5 minutes (and im abit edgy about it now coz it was too easy..or i did it wrong :P )

Yeah, it was pretty simple. I sat there just staring at it wondering if I must be missing something because it was so straightfoward.

Mysteriouschic

I made a few stupid mistakes in it. I couldn't figure out how to draw the co-ordinate diagram for the circle I didn't think it looked right. Then I got to linear programming I couldn't work out the second equation. An the cumulative frequency table spent ages on that.

Gav77

soccymonster wrote: »

Regards probability actually..... I was gonna do it as a last resort because it's either wrong or right and i usually get it wrong . But ended up doing it as an extra question anyways. But was it ridiculousy easy? Coz like.. I had it done in 5 minutes (and im abit edgy about it now coz it was too easy..or i did it wrong :P )

Cant help feeling i made a mess of that question somehow...surely it wasent as easy as it seemed?

._.

Can't wait to see some solutions, I'm a bit worried about my part C of probability, was getting some crazy fractions that wouldn't simplify.
Though that said, I can't see how I could possibly be wrong either..

lisabisa

._. wrote: »

Can't wait to see some solutions, I'm a bit worried about my part C of probability, was getting some crazy fractions that wouldn't simplify.
Though that said, I can't see how I could possibly be wrong either..

My answers wouldn't simplify either... worried me.

._.

446 over 893 for Q6 Ci anyone?

Mysteriouschic

._. wrote: »

446 over 893 for Q6 Ci anyone?

Thats I got that I thought I was doing something wrong. So I think I crossed out the answer thinking the number didn't seem right :S.

Mysteriouschic

._. wrote: »

Can't wait to see some solutions, I'm a bit worried about my part C of probability, was getting some crazy fractions that wouldn't simplify.
Though that said, I can't see how I could possibly be wrong either..

I ended up leaving the question , I thought I was doing something wrong not able to get the answers to simplify. Then the numbers being really big .

._.

I only did the 6 questions
I'm pretty sure they made the answers like that to throw people and make them think they're wrong. I'm sure the same people as before will have the answers up in the next day or two anyway, nothing we can do but wait

Fbjm

Was I the only one who looked at those huge Q. 6 answers and saw it as a good thing?

The way I see it, they added in a lot of thinking-outside-the-box type questions for Q. 5, so they simplified Q. 6 for us by taking out the whole simplify-down aspect!

._.

Fbjm wrote: »

Was I the only one who looked at those huge Q. 6 answers and saw it as a good thing?

The way I see it, they added in a lot of thinking-outside-the-box type questions for Q. 5, so they simplified Q. 6 for us by taking out the whole simplify-down aspect!

I just saw them as "not 100% sure if correct".

I knew never learning Trigonometry would be a good idea
I swear i'll lose it if I have to do it next year in college..

martyllia

Mysteriouschic wrote: »

I ended up leaving the question , I thought I was doing something wrong not able to get the answers to simplify. Then the numbers being really big .

did the same thing! everything was sound until the big answers anyway ,i did this q as an extra,hopefully i did well in the first 5

Mysteriouschic

You know for the circle question 3bi) where you had to draw a graph.
Was the points you had to plot? (0,0) (7,-2)

and the equation for linear programming was it? Q 11b
20,000x + 40,000y < 800,000
an the 2nd
18x + 24y < 576
Just wondering about the 2nd line didn't think that was it as the first was big and then the others had small numbers so left the question

._.

Mysteriouschic wrote: »

You know for the circle question 3bi) where you had to draw a graph.
Was the points you had to plot? (0,0) (7,-2)

No, it was (3, -1) (<-- the centre), and (7, -2) (<-- point on the circle).
If the equation of the circle isn't x^2+y^2=r^2 then the centre isn't (0, 0)
Sorry

Mysteriouschic

._. wrote: »

No, it was (3, -1) (<-- the centre), and (7, -2) (<-- point on the circle).
If the equation of the circle isn't x^2+y^2=r^2 then the centre isn't (0, 0)
Sorry

oh right thanks no wonder I couldn't get the graph to look right. The question really confused me.

mattt

any solutions yet?

166man

Mysteriouschic wrote: »

You know for the circle question 3bi) where you had to draw a graph.
Was the points you had to plot? (0,0) (7,-2)

and the equation for linear programming was it? Q 11b
20,000x + 40,000y < 800,000
an the 2nd
18x + 24y < 576
Just wondering about the 2nd line didn't think that was it as the first was big and then the others had small numbers so left the question

Ah that almost got me... but you just divide the top equation by 10000 to get
2x + 4y<80

And then the second one divide by 6 so....
3x + 4y < 96

Easy and then carry on as normal...

Mysteriouschic

166man wrote: »

Ah that almost got me... but you just divide the top equation by 10000 to get
2x + 4y<80

And then the second one divide by 6 so....
3x + 4y < 96

Easy and then carry on as normal...

ah I forgot you had to divide them. I only learnt how to do linear programming last week. I must have done easier questions. Most of the ones had the two equations in it.

Iceboy

Guys lets say I fail ordinary maths, which basially means no college, can I do the maths exam next year?

randylonghorn

Iceboy wrote: »

Guys lets say I fail ordinary maths, which basially means no college, can I do the maths exam next year?

As a college requirement as opposed to for points?

Yes, these don't have to be in the same year except for one or two restricted courses like medicine.

Some colleges also offer a special maths "make-up" exam later in the summer.

But for now, forget about it and concentrate on your other papers. You may find that you have done better than you think!

SDTimeout

That Trig question was similar to the arithmetic from Paper 1. Some lovely stuff in it and i found part ii before part i in the triangle with 35, Angle and 62.:D

._.

The paper 2 solutions are up

http://www.studentxpress.ie/ordinary/ordarea.htm
Click "Questions" and the quick answers to them are at the bottom, navigate to different topics at the left side of the page.

Gav77

Probability answers are wrong, should be over the amount of boy or girls, not the whole amount

._.

Gav77 wrote: »

Probability answers are wrong, should be over the amount of boy or girls, not the whole amount

Why?
"A student is picked at random. What is the probability that the student is a boy?"
Therefor, number of boys over total number of students..

Dr.Evil

A boy is picked at random.
What is the probability that he cycles to school?

So you have the boy firstly.
Then, whats the probability that he cycles to school? Implies that it's out of all the boys.

._.

Dr.Evil wrote: »

So you have the boy firstly.
Then, whats the probability that he cycles to school? Implies that it's out of all the boys.

The answer to that one is 123 over 446. Ie, the number of boys who cycle over the number of boys in total.
Looks legit to me.