* Leaving Cert Ordinary Level Maths - both papers

FlyingIrishMan · 08-06-2014 9:38pm

onethreefive wrote: »

Is this correct?

Mean: = The number which appears the most

Median = Put them in order from lowest to highest and get the middle number

Mode = Add up all the numbers and divide by the amount of numbers.

The median is right, but your mean and mode are the wrong ways around.
Mean is the average, whereas mode is the one the appears the most.

onethreefive · 08-06-2014 9:43pm

FlyingIrishMan wrote: »

The median is right, but your mean and mode are the wrong ways around.
Mean is the average, whereas mode is the one the appears the most.

Thanks

mean average mode most common. Got it!

gal555 · 08-06-2014 9:44pm

This thread is making me feel bad....
Am I the only one planning on winging this paper

Osmosis Jones · 08-06-2014 9:44pm

gal555 wrote: »

This thread is making me feel bad....
Am I the only one planning on winging this paper

You're not alone:P

onethreefive · 08-06-2014 9:45pm

gal555 wrote: »

This thread is making me feel bad....
Am I the only one planning on winging this paper

Trust me I am too haha! Just need 40% overall.

onethreefive · 08-06-2014 9:47pm

There has to be some easy parts to the paper tomorrow yeah? My future is kind of relying on it.

A7XGirl · 08-06-2014 9:49pm

onethreefive wrote: »

There has to be some easy parts to the paper tomorrow yeah? My future is kind of relying on it.

Hopefully it goes better than the mocks or else I can kiss college goodbye.

onethreefive · 08-06-2014 9:51pm

A7XGirl wrote: »

Hopefully it goes better than the mocks or else I can kiss college goodbye.

Same, I've been set on my course and college for ages and i am so excited about it but there is a very real possibility I will fail maths

I've been putting a lot into it but there is a lot I can't do due to my teacher being as approachable and useful as a rattle snake.

neonmaria · 08-06-2014 10:08pm

how likely is standard deviation to appear because I can't remember how to do it

Badwulf · 08-06-2014 10:16pm

I hope trigonometry kills itself

Badwulf · 08-06-2014 10:28pm

can anyone give me some kind of short cut or explain when how why and which I should use, sine rule, cosine rule etc. etc. in realation to triangles ?

A7XGirl · 08-06-2014 10:36pm

Is there any formula that isn't in the tables?

Bob123321 · 08-06-2014 10:46pm

Have a bad, bad feeling about this paper being honest but I hope I'm very wrong lol.

Badwulf · 08-06-2014 10:55pm

whats the fail rate for maths? is it more or less than 20 percent?

caolan1996 · 08-06-2014 11:06pm

neonmaria wrote: »

how likely is standard deviation to appear because I can't remember how to do it

i dont now what it is either when do i use it even?

HassanNat95 · 09-06-2014 12:38am

it will be impossible & i will fail this exam.

onethreefive · 09-06-2014 12:42am

I finally know all the constructions except the incircle one. Disaster if that one comes up

Osmosis Jones · 09-06-2014 12:44am

onethreefive wrote: »

I finally know all the constructions except the incircle one. Disaster if that one comes up

Just bisect the angles!:pac:

kierancos · 09-06-2014 8:39am

Can complex numbers come up again?

FlyingIrishMan · 09-06-2014 11:48am

Another nice easy paper.

Osmosis Jones · 09-06-2014 11:50am

That was lovely

a0ifee · 09-06-2014 11:57am

not as nice as paper 1 but not that bad really. Hated question 5 & the second part of 6a though.

can I ask what people got for the co ordinates of Q?

WFMS · 09-06-2014 12:34pm

That was definitely a nice easy paper. Quite long though as I didn't get to finish Q. 9 before the exam ended.
Anybody know how the papers are marked? Is it out of all the questions or the "best 6 out of 8" sorta thing?
If it's all the Q's then ah well, an easy enough 30 marks gone. What you gonna do.

Gaw_ · 09-06-2014 12:34pm

That wasn't terrible. The section B question with the Pie Chart was taking the piss, so easy. But there was quite a lot of trig on the paper. I just used random combinations of sin/cos/tan until I got an answer that looked correct :P

TaiHusky · 09-06-2014 12:36pm

I am terrible at trigonometry and most likely failed that. I feel like chugging bleach rather then having my mom find out

Osmosis Jones · 09-06-2014 12:37pm

I was delighted with the amount of trig:P

Nice easy 25 marks for the construction too.

kittycat94 · 09-06-2014 12:41pm

That was okayish.. the tax question with the pie chart was horrible.

STADEdeLUC · 09-06-2014 12:44pm

Couldnt get the pie chart out for love nor money

Laylaxx · 09-06-2014 12:45pm

So happy with that paper! I much prefared it to P1 but was quite long! Didn't get the last bit of Q9 done and had to rush the end but apart from that it wasn't too bad!

Osmosis Jones · 09-06-2014 12:46pm

Pie chart was just multiply the percentage over 100 by 360 to get the degrees was it not?

thedumbone · 09-06-2014 12:47pm

i ran out of time...
just wondering if those **** are writing whole paper in 2,5h cuz i left 1 Q

Catherinem1616 · 09-06-2014 12:48pm

Osmosis Jones wrote: »

Pie chart was just multiply the percentage over 100 by 360 to get the degrees was it not?

Yup!

Osmosis Jones · 09-06-2014 12:49pm

Catherinem1616 wrote: »

Yup!

Lovely, almost didn't bring in a protractor thinking I wouldn't need it:p

BauBau19 · 09-06-2014 1:02pm

Nicest paper we could have asked for. Trigonometry was all too easy... I must be the only one who found paper 1 impossible in comparison to paper 2. I would say 70% in paper 1 and around 90% in paper 2. Hopefully.

kn2k10 · 09-06-2014 1:13pm

Paper went amazing, but did anyone think the tax question which went like "Give one reason why not all properties were registered." is not a maths question?

STADEdeLUC · 09-06-2014 1:14pm

kn2k10 wrote: »

Paper went amazing, but did anyone think the tax question which went like "Give one reason why not all properties were registered." is not a maths question?

I just said some people may be against the charge and therefore wont pay it

Osmosis Jones · 09-06-2014 1:15pm

kn2k10 wrote: »

Paper went amazing, but did anyone think the tax question which went like "Give one reason why not all properties were registered." is not a maths question?

Yeah I just said because some people didn't bother registering, had no relevance

BauBau19 · 09-06-2014 1:20pm

Osmosis Jones wrote: »

Yeah I just said because some people didn't bother registering, had no relevance

I said that there mightn't be anyone living in them.

I'd say they'll accept anything really.. weird question.

Bob123321 · 09-06-2014 1:21pm

Forgot how to do the pie chart properly but gave it a good enough effort none the less I'm hoping I passed it can't say I did with flying colours tho.

jazz101 · 09-06-2014 1:23pm

That pie chart/taxes question was a really handy 70 marks which probably got me a pass. Didn't know how to attempt any of the entire last question.

skippy1977 · 09-06-2014 2:41pm

Another fair paper. Didn't try and trick students up too much.

Q1 Nice probability question to start...
P(Black) 5/24 P(Black or Red) 14/24
P(Silver then Black) 10/24 x 5/23
P(One Red and One Black) 9/24 x 5/23 x 2...as it could be red then black OR black then red
P(Diesel or Red) 9/24 + 9/24 - 2/24...as 2 are diesel AND red...you don't want to count them twice

Q2 P(doesn't score) 1/4
P (scores both) 3/4 x 3/4
P (scores exactly twice) 3/4 x 3/4 x 1/4 then multiply this by 3 as 2 penalties can be scored in 3 ways...it could be SSM or SMS or MSS
P (scores for 1st time on 5th penalty) MMMMS = 1/4 x 1/4 x 1/4 x 1/4 x 3/4

Q3 Centre (-2,3) radius 10
Show point is on the circle just sub (-8,11) in for x and y in circle equation.
Slope of ap using slope formula -4/3
Equation of a tangent is equation of line just sub in point (-8,11) and perpendicular slope 3/4
To find point Q just translate the point P through centre = (4, -5)

Q4 Length of AB was 5 through either observation or distance formula.
Area of triangle was 1/2(5)(7) = 17.5
Congruent triangle easy enough to draw....mention that 2 sides and an angle were the same to show congruent.

Q5 1st couple of parts grand. Square root of 81 gives 9 for the side and use area of a sector forumla for shaded area of (b) 63.59 ish
Other two parts were tricky. 81-63.59=17.41 Multiply this by 2 to give total amount of white space in (c) 34.82....take this from 81 to leave shaded area. 46.18
(d) part - I'd use pythagoras to get diagonal of square = 12.73...this is also the base of the triangle. The height of triangle is the distance from DP (9) minus half the diagonal 6.365 = 2.635....then half the base times the height for area of triangle. 1/2(12.73)(2.635)=16.8...there may be other ways.

Q6 Incircle was fairly straight forward and the radius was about 3.7 ish...
B part was tricky. It's a right angled triangle so use pythagoras with the hypontenuse twice the radius 4root5.
4root5 squared = x squared + 2x squared and solve
x=4

skippy1977 · 09-06-2014 3:02pm

Q7 For the pie chart just multiply each of the % by 360 to work out how many degrees in each section.
More percentages to fill out the table and a bit of multiplication to work out total tax due.
Next page was all arithmetic, addition, subtraction, division and some more %'s to finish!

Q8 (i) 360 degrees in a circle divided by 3 = 120
(ii) Area of a circle of radius 65 using formula = 13267
(iii) Area of a triangle formula 1/2absinC with a and b 65 and C 120 =1829
(iv) 31% of 25 years is 7.75 years and work out how many minutes in that!! x 365 x 24 x 60....then multiply by 15 times per minute...6.1 x 10^7
(b) Use ratios or Sine rule to give 173m
(c) use ratio Tan@=154/100 gives angle of 57
(ii) error is 60-57=3....as a % 3/57*100 = 5.3%

Q9 (i) ED by Pythagoras = 10.2
(ii) Angle AEB through ratio cos@=12/14 ...is 31 degrees
(b) Angle DEB is 180-11-31= 138
(ii) Cosine rule then to find DB = 22.6m

All that is very rough so could be a few mistakes. That's the gist of it anyway. Hope ye did okay.

a0ifee · 09-06-2014 3:35pm

I did question 5 completely wrong :pac: I hadn't a clue what to do

Aarong9224 · 09-06-2014 3:53pm

Did well in both papers. Needed a c3 overall for college , 99.9% sure i got it. Estatic

RAnderson1995 · 09-06-2014 4:39pm

I loved that paper, Paper one i'd say i probably got about a B in it, but i feel confident i could get an A for paper 2!! Nothing too complicated on the paper, it was a great start to the day that was followed by an unbelievable HL Irish paper 1!

Badwulf · 09-06-2014 4:41pm

So for the question on the wind turbine I got the wrong angle, does this mean that all my other questions that involve using that angle will get me 0 marks even if I do them the right way?

brijay · 09-06-2014 4:51pm

Badwulf wrote: »

So for the question on the wind turbine I got the wrong angle, does this mean that all my other questions that involve using that angle will get me 0 marks even if I do them the right way?

No your other answers will be correct

RAnderson1995 · 09-06-2014 4:51pm

Badwulf wrote: »

So for the question on the wind turbine I got the wrong angle, does this mean that all my other questions that involve using that angle will get me 0 marks even if I do them the right way?

No, you'll still get marks for all your other work! even if the answers are wrong, if you used the right method they'll reward you!

Badwulf · 09-06-2014 4:53pm

brijay wrote: »

No your other answers will be correct

Woah, thats a load off

onethreefive · 09-06-2014 5:05pm

Is the formula we were supposed to use for the area of the sector the one with the angle over 360? And I am SO happy the incircle came up. As of Friday I had never done a construction in my life and got them done over the weekend! The B part of that question though was annoying.

***** Leaving Cert Ordinary Level Maths - both papers ****

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* Leaving Cert Ordinary Level Maths - both papers