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Auto DraftSorry Rachel, you got here before me!! 148 comments to Year 11 Div 1 sign in here please |
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Hello I think I just finished the homewoork but I was wondering if a answer in the 700s would make sense to be the volume of a sphere in qu 6,4i? Thank you
hello, i have no clue where to start on 4h 6… i have been at in for a while now and still not get it, i think i have got the lengths of the triangle but i dunno what to do next.. is it the thing we did last lesson??|
ggrrr. thnaks
Hi Maddy,
Make yourself a paper cone if it helps. What matches what in the 2 diagrams? How long would the arc be if you had a full circle? This will lead to what fraction of the circle you have.
Mrs T
Hi Maddy, an answer in the 700s sounds right to me. JT
okay thanks, yeah i made a cone thingy
hey Mrs…i forgot to write it down in my planner but how much of the rearranging the formulae questions should we do for homework and how do you do : e.g. p = 2r – q (all divided by) 3s.
thanks
would this be right? s = 2r – q -p (all divided by) 3. ???
Hi Frances,
I left it up to you. Do enough to feel confident about it.
No to 2nd question.
if p = (2r-q)/3s
then you are dividing by the 3s, so when it goes to the other side it becomes multiply.
You get 3ps = 2r – q
so s = (2r-q)/3p
JT
ohh i get it. Thanks
hey Mrs T,
on the exam paper you gave us the last question was about factorising. I was just wondering whether from using the quadratic formula you could get 2 brackets because in my class work we only ever got two solutions so how do these factorise. or is it not possible?
Thanks
Also for 6(x + 2)squared. Does this mean if you were to right it out it would be 6(x + 2)(x + 2)???
Hi Frances,
Yes, it’s 6(x+2)(x+2).
You can only get 2 brackets from factorizing. The quadratic formula takes you straight to the solutions.
Is this a question where you have a quadratic fraction? If so, you need to factorise both quadratics and then cancel a common bracket. One of the quadratics is often the difference of two squares, so look out for that as it will help you factorise the other one.
Have fun,
JT
PS Mr B and I are both going on the Ypres trip, and Miss D is on the DofE gold practice, so if you need any more help you’ll need to ask Mr W in school.
thankssss
hi mrs tibble, just wondering if any mark schemes have been uploaded, cant find anything on the edexcel website.
ive mainly done the november 2008 series and mock examination paper 3
hope you’re having a nice easter
Hi Anya,
Have a look on Pupilshare: Mr W has put a load of stuff there. Come back if you can’t find what you want.
Just got back from Choir Trip to Salzburg; fantastic time
How about you?
Mrs T
Hey Mrs T please can you put the mark scheme to the june 2010 past paper on pupilshare because I’ve done that one and it doesn’t seem to have a mark scheme on pupilshare. thankss
Hi Frances,
Will e-mail them to you on school e-mail.
JT
greatt thank youu
I marked it thank you very much Mrs T
How did you get on?
hey miss
only the November 2009 papers have been put on, and I’ve done the 2008 papers.
Also Miss Daley gave us two papers which are mock examination papers 2540/03 and 2504/04 but she said the mark schemes are sometimes wrong with the mock papers so i might leave that paper and mark it when back at school
So just the novemeber 2008 mark schemes would be great
Easter is going well, enjoying the weather
Hi Anya,
There’s June 09, Nov 09 and June 10 on Pupilshare – Senior School – Maths – Summer exam revision.
Mark schemes e-mailed to your school address.
Mrs T
Mrs Tibble…you know ages and ages ago I asked you about risk assessment for a visit to a theme park and you said you had one since you’d been in charge of it before…well if you don’t remember basically I was after it for my ICT coursework and I was wondering whether you’d be able to give me some info about it either today on the blog or in person tomorrow? Or if it’s a document could I possibly have a look at a copy? Just because my coursework is in for Thursday and having a bit of a stress! :/ ahhhhhhhhhhh
Hi Rachel, will e-mail you shortly on your school e-mail.
JT
Thank you
Should be there now. Have fun!
Hi Mrs T,
I’ve done a few practice papers where there’s been a last question on proof. How would you get 3 marks for a question like this?
Proove that the sum of two consecutive numbers is always an odd number???
Thankss
Hi Frances,
mark 1: set up the algebra – let the 2 numbers be n and n+1 (showing you understand ‘consecutive’)
mark 2: add them (because that’s what sum means) n+n+1 = 2n+1
mark 3: conclusion: 2n is even because it’s a multiple of 2 so 2n+1 will always be odd
OK now?
Mrs T
ohhhhh cool thank you…i understand how to do them now
Hi Mrs Tibble,
Not sure where I should comment but it says in the maths booklet that the answers are attached but I can’t find them :/ I’ve done a lot of the booklet but want to check my answers…could you perhaps put the answers on here if you have them?
Thanks!
Rachel x
Hi Rachel,
Don’t have a C1 here sorry. Will see what we can do for you tomorrow – we want to come and speak to you all anyway.
Also, you are 6th formers now so shouldn’t really post in the Year 11 slot
Those days are over now!!
Looking forward to seeing you all again. We have an ace maths group
See you tomorrow.
JT
Ahhh I see, at least it means I wasn’t just going mad and couldn’t find the answers!
Oh yeah! I blame force of habit
See you tomorrow!
Hope you can sleep with all this excitement
Hey Mr W/Mrs T i didn’t know where to post this.
For the homework about sketching quadratic curves i am unsure how to calculate the turning point/complete the square for this equation: y=3xsquared – 13x
Thanks
Hi Frances,
Start by factorising it. Because there’s no number term, there’ll only be one bracket. That will give you the roots. The x value for the mid-pt is halfway between the roots. Sub that into the eqn of the curve to get the y value.
If you want to complete the square (have you been asked to do this?)
start by factoring out the 3 as it’s not a single x-squared.
so y = 3(x-squared – 13x/3)
then complete the square on the contents of the bracket.
Numbers are not nice!
Have fun.
JT
hey Mrs T,
for the maths hwk about simlutaneous equations for this question:
3x + 2y = 7
xsqaured + y = 8
to sub the first equation into the second would you do:
x = 7 – 2y divided by 3
or
y = 7 – 3x divided by 2
thanks
Hi Frances (why are you back in year 11?)
Because the x is squared, I would replace the y term to keep things simpler. I would also double everything in eqn 2 first so that I could replace the 2x, rather than introduce fractions then have to get rid of them.
Have fun
Mrs T
because i didn’t know where to put it
ok will try that thanks
Hehe. Try Get Help/sixth form/pure
hey Mrs T/Mr W (i don’t know where to write it)
i’m making corrections on the test we had before half term on chapter 4 and for one of the questions its talking about ‘c is a constant’ and to that ‘f(x) = 0 has equal roots’.
what does this mean?
thanks
Hi Frances,
A constant is a number that stays the same.
For the significance of equal roots look at the discriminant work on page 21. Read the yellow box, bottom right of the page.
Mrs T
hey mrs t,
for the mixed exercise about straight line graphs i am stuck on question 13.
how do you work out the equation of the line when you some of the co-ordinates are letters:
e.g. a(k,1)
b(8,2k-1)
we are told mAB = 1/3 and that k is a constant?
I dont know what formula to do and keep getting stuck?
thanks
Hi Frances,
Use those coordinates to get an algebraic gradient and put it equal to 1/3. You can then solve for k.
Mrs T
ok will try it thankss
hey for the stats homework i’m not sure what to do for question 4. it asks to prove that 2 events aren’t mutually exclusive, what method do i use to prove this?
thanks
Hi Frances,
show that there is overlap ie that it is possible for a result from one set to also be in the other.
Hey mrs t,
For exercise 10d I’m confused as to what to do for question 1k?
Thanks
Hi Frances,
Take RHS over to LHS and factorise out the sine theta.
Mrs T