Maths Paper 1 SOLUTIONS

Signature

ORDINARY LEVEL

Anyone else write down their answers on their question sheet and bring it home?

It would be interesting to see answers/solutions to get an idea of how well we done...

QueenOfLeon

If its honours, everyone on the honours maths thread is throwing out answers, have a look

Signature

Anne-Marie!! wrote: »

If its honours, everyone on the honours maths thread is throwing out answers, have a look

Thanks. But I did ordinary level.

QueenOfLeon

Signature wrote: »

Thanks. But I did ordinary level.

O, sorry. Now your edit makes me look kinda stupid Ask in the ol maths thread, sure to be a few people there with answers

CyberWaste

To be hoenst, many people say that you shouldnt look up the answers as if you ****ed up, it will piss you off. Id just wait till the results in August, whats done is done.
And I dumped the Q sheet after I left the room, cant wait to stop doing these feckin maths.

Signature

Anne-Marie!! wrote: »

O, sorry. Now your edit makes me look kinda stupid Ask in the ol maths thread, sure to be a few people there with answers

No, no! I should have said OL in the first place

questionmark

ok heres what i got, i am not that good at maths so alot of these will prob be wrong.:rolleyes:
question1
ai 15
ii 35
bi 441
ii 363.40
iii 40.32
ci 20.833% wrong
ii 2610.08 wrong

question 6
a k=6
bi h3=12 h-3=12
ii
ci (3,-21) max (1,1) min

question7
15x to the power of 4 -14x +9
bi 1280
ii 4x 0ver xsquared +1 to be squared
ci
ii 10sec
iii 45meters

question 8
a 2
b 4x
ci -1 over x+1 to be squared

question 5
a 6
bi 6
ii 52
iii 50
iv
ci 2
ii
iii 4

question 2
a 2
bi 729
ii 3 to the power of 3
iii x=-3 wrong
c


please post your results too

errlloyd

You got 1c wrong.

Interest was 4.8% no real issue cause you probably got some maths down so most of the points. I know its useless advice now, but in fairness no bank offers 20% interest... Lol


Oh sorry question 2 part b. The last bit on indices

3^-9 = 1/729.... I know its awkward as hell.

questionmark

haha ya i knew 20% sound wrong ha well i am just hoping to pass so i am not overly worried.

In-it

Ouestion 1 A(b) 2 What about the tax credits £53 !

errlloyd

In-it wrote: »

Ouestion 1 A(b) 2 What about the tax credits £53 !

**** THEY WERE POUNDS, WHATS THE EXCHANGE RATE....


(I am joking)

CaoimH_in

What I got:
1
a i 15
ii 35

b i 441
ii 405.80
iii 40.32

c i 4.8%
ii 2610

2
a 2
b i 729
ii 3 to the power of 3
iii x = 2
c i f(-2) = 0 true
ii x= -2 x= -1

3
a 2x(to the power of 3)+ 4x+12
b i y = 5 when x= 2
y= 2 when x = 5
ii y = 5 satisfies inquality
c i 2x cm
ii (square root of) 4x

4
a -15+4i

b i 3+5i = 3+5i
ii 17(over)3 + 17 (over)5i
c i 5
ii p = 3 q = 2
5
a 6
b i 6
ii 52
iii 50
iv 1100
c i -2
ii -384
iii T4
7
a 15x(to the power of)4 -14x + 9
b i (10(to the power of 2) -40)(to the power of 2)
ii 1x(to the power of 3)(over)
(x(to the power of 2) + 1)(to the power of 2)
ci 6 seconds
ii 10M/PS
iii 45 metres

Any replies help!

karloneill23

the 1st guy got q6 part c wrong the max pointwas something like (3,-3)

on the q about area of a rectangle did any1 get the value witout x's by using pythagarus?


anybody else fee this paper was fairly easy?

marshmallow

karloneill23 wrote: »

the 1st guy got q6 part c wrong the max pointwas something like (3,-3)

on the q about area of a rectangle did any1 get the value witout x's by using pythagarus?


anybody else fee this paper was fairly easy?

yeh don't have it here but think it was:
4x + x = 45
x= 9

then continue on..
6 x 3 = 18

is there a square root key on the keyboard??

CaoimH_in

on that question I thought.


rectangle length is 2(square root)X
and width is 1(square root)X

to find the area of the rectangle its L x W so...

2(square root)X x 1(square root)X which is 2(square root)X(to be squared) which cancels to 2x.

Area of a square is double that of the triangle so 2x x 2 = 4x
area is 4x so to find the length of a side its (suqare root of)4x

right? wrong?

PlayGirl

for tax credit do you take the tax credit away from the wages *before* you calculate tax, and then add it on at the end.. or do you calculate the tax on al of the wages and then take the tax credit away from the tax???

Du

CaoimH_in wrote: »

on that question I thought.


rectangle length is 2(square root)X
and width is 1(square root)X

to find the area of the rectangle its L x W so...

2(square root)X x 1(square root)X which is 2(square root)X(to be squared) which cancels to 2x.

Area of a square is double that of the triangle so 2x x 2 = 4x
area is 4x so to find the length of a side its (suqare root of)4x

right? wrong?

wrong, you split the rectangle in half diagonally so that you get 2 right angled triangles. You then use Pythaggorous to find out x, and use the area formula of a triangle and multiply it by 2.
I got 18cm². And 6cm for part 2.

CaoimH_in

but the question was algerbra? You are probably right, but there was a question similar to this a few years back and it wasn't finding x or a natural number, so I assumed tbh

CaoimH_in

that and it didn't say as at natural number, poor question tbh

marshmallow

Du wrote: »

wrong, you split the rectangle in half diagonally so that you get 2 right angled triangles. You then use Pythaggorous to find out x, and use the area formula of a triangle and multiply it by 2.
I got 18cm². And 6cm for part 2.

that's what I got too. Q was poorly worded I think.

snazzy

I had them all written out but because I left early I wasn't allowed bring it out with me for some reason!

snazzy

Du wrote: »

wrong, you split the rectangle in half diagonally so that you get 2 right angled triangles. You then use Pythaggorous to find out x, and use the area formula of a triangle and multiply it by 2.
I got 18cm². And 6cm for part 2.

I did what you did by splitting it but I went to my grinds teacher afterwards and she said that the 2x thing was right!

phasers

snazzy wrote: »

I did what you did by splitting it but I went to my grinds teacher afterwards and she said that the 2x thing was right!

I think the question was terribly phrased, they might have to give marks for both answers!

Du

Yeah they'll have no option other than to take both as right answers, since they didnt even specify

We

CaoimH_in wrote: »

Q2

b iii x = 2

Q2 (B) (iii) For whoever got it wrong, heres my working, in mspaint form