Nov 2014 math 22

[Swathi Krishnan]

how was your math paper? Variant 22

 

[Strockers]

Maths p22 was quite easy but there was this question where we had to find the co-ordinate of a point outside a circle which very few in my school got. The answer was -1

 

[Harsheys]

I don't remember that question,
Was is the one where they asked you the point on a line when y=6 or something like that?

 

[Strockers]

It was the question where they asked us to find the value of 'k' in (7,k)

 

[Swathi Krishnan]

Hey do you know how to solve that?

Maths p22 was quite easy but there was this question where we had to find the co-ordinate of a point outside a circle which very few in my school got. The answer was -1

 

[Strockers]

Ya, what u do is that first find the gradient of the tangent ( which is the negative reciprocal of the gradient of the radius). Then use this value and the points (3,-4) and (7,k) in the gradient formula. After solving the equation, the answer comes to -1

 

[Samruddha Sonawane]

WAS the gradient -1 or -0.75..??

 

[Samruddha Sonawane]

I left 10 marks and so I'll get out of 60, btw what was the answer of vectors the second question..?? and the reason ..??

 

[Strockers]

WAS the gradient -1 or -0.75..??

The gradient of the radius of the circle was -1.33... While the gradient of the tangent was-0.75 and the answer k was -1

 

[jj1234]

I left 10 marks and so I'll get out of 60, btw what was the answer of vectors the second question..?? and the reason ..??

I thnk 1/3c+1/3a I cn't remember..one reason is vector ax is 1/3 of the other vactor..

 

[Strockers]

I thnk 1/3c+1/3a I cn't remember..one reason is vector ax is 1/3 of the other vactor..

That is exactly what I wrote

 

[Samruddha Sonawane]

gud so thats' the question which I left AND THE EASIEST one, yes I am talking abt locus it was so easy bt still

 

[jj1234]

gud so thats' the question which I left AND THE EASIEST one, yes I am talking abt locus it was so easy bt still

Its ok ^-^
u cn gt that mark frm p4

 

[jj1234]

Anyone can share what questions come out? I want to try to do some of them. Is paper 22 easy? Is paper 42 easy?

22 easy 42 last q difficlt

 

[Lost Pink]

Some guy - I don't remember the name - is playing a board game. He's on 97 and has to reach 100 to win the game.
The rules are as follows:
1. One throw is the sum of the scores of two fair 6 face dice rolled together.
2. If he gets a score of more than 3, he remains on 97.
3. If he lands on 99, he moves back 3 places.
What is the probability of him reaching 100 in his next two throws?
What was the ans?..? Was any one able to solve?!

 

[Swathi Krishnan]

Some guy - I don't remember the name - is playing a board game. He's on 97 and has to reach 100 to win the game.
The rules are as follows:
1. One throw is the sum of the scores of two fair 6 face dice rolled together.
2. If he gets a score of more than 3, he remains on 97.
3. If he lands on 99, he moves back 3 places.
What is the probability of him reaching 100 in his next two throws?
What was the ans?..? Was any one able to solve?!

the answer was 47/432
(probability he gets 3 on first go) + (probability he gets 2 on first throw * 4 on second) + (probability he gets anything above 3 on first throw * 3 on second)

 

[Sariya Khan]

the answer was 47/432
(probability he gets 3 on first go) + (probability he gets 2 on first throw * 4 on second) + (probability he gets anything above 3 on first throw * 3 on second)

I also did it in the same way and my answer I guess is also the same