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The Hard Grade 9 Questions Thread 2019

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Reply 140

Is it 2:5
Original post by OllyDaws
Untitled.png
OAB is a triangle
OPM and APN are straight lines
M is the midpoint of AB
OA-> = a OB-> =b
OP:PM = 4:3
Work out the ration ON:NB


Non-calculator 5 marker from edexecel
I did not get this question correct, i do have answers but wont be amazing at explaining

Reply 141

Original post by ThunderBeard
1 (x+1)^2 +2
X^2+2x+3
2. Any more info?
3. Odd: o+o+o
.5*.5*.5
4.if a/b is <1 then b/a is> 1
Therefore 1,0 and -1 are impossible


1. Not right. Check to see if (2, 20) is actually on your curve
2. The question should be doable with the information you have
3. I'd need to see your full working to see if you've got this (you seem to have the right idea)
4. This isn't a full proof :frown:. You'll need to do some algebra to prove your claim.

Btw, please use spoiler tags

Reply 142

Original post by ThunderBeard
2:3

Correct.

Reply 143

Original post by OllyDaws
Untitled.png
OAB is a triangle
OPM and APN are straight lines
M is the midpoint of AB
OA-> = a OB-> =b
OP:PM = 4:3
Work out the ration ON:NB


Non-calculator 5 marker from edexecel
I did not get this question correct, i do have answers but wont be amazing at explaining


How would I start this question clues please

Reply 144

Close, check ratio maybe?

Original post by ThunderBeard
Is it 2:5

Reply 145

To find ON-> you need to find a few other line first
Original post by IsMo987
How would I start this question clues please

Reply 146

My bad, 2:3 (w:5 of whole thing)
Original post by OllyDaws
Close, check ratio maybe?

Reply 147

Original post by ThunderBeard
My bad, 2:3 (w:5 of whole thing)


thats it, nice job

Reply 148

If you haven’t done it yet, Edexcel June 2017 Paper 1H has some evil questions on it to attempt. They aren’t quite as hard as the ones on this thread, but they are more likely to come up and still require a fair bit of thought.

Reply 149

Original post by begbie68
Which bit of Grade 9 questions does this apply to?


Original post by RDKGames
The line L:3y4x=3\mathcal{L} : 3y-4x=3 is tangent to parabola Π:9y=(x+3)2+9\Pi : 9y=(x+3)^2+9 at point A, and it crosses the x-axis at point B.
The perpendicular line to L\mathcal{L} goes through point A and crosses the xx-axis at point C.

Find the area of the triangle ABC, giving your answer in the form a4a21\displaystyle \frac{a^4}{a^2-1} where aa is a natural number

I managed to get 5^4/5^2-1 but not showing working out in case someone wants to attempt it themselves

Reply 150

Helppp

Reply 151

Original post by IsMo987
Helppp

i that a cube above ma?

Reply 152

Original post by IsMo987
Helppp

i believe i got it

Reply 153

Original post by OllyDaws
i believe i got it


Wat did u get

Reply 154

Spoiler



Original post by IsMo987
Wat did u get

Reply 155

Original post by Notnek
I'll kick things off with one that I've posted the last 2 years and was done badly in both threads:




The value of is 32.123 degrees correct to 3 decimal places. The value of yy is 62.425 degrees correct to the nearest 0.005 degrees.

By considering bounds, find the value of to a suitable degree of accuracy. You must show all of your working.


non calc or calc?

Reply 156

Original post by Coolkitkat23
non calc or calc?

Calc

Reply 157

o h cause i was thinking about the tan cos and sin rules, thanks for the questions i hope it'll get me from a 7-8
Original post by Notnek
Calc

Reply 158

Original post by OllyDaws

Spoiler




method?

Reply 159

Spoiler

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