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Mrs Tibble’s / Mr Atkins’ Year 9711 comments to Mrs Tibble’s / Mr Atkins’ Year 9 |
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hi Mrs Tibble,
Im really stuck on the homework for questions 14 and 16 sincei don’t know how to work out question 14 if you don’t have the area of the cross-section or the length and also for question 16 since you only have the height and i don’t know how to work it out if you only have the height!
Harriet
hi mrs tibble, I also forgot 2 metion can I email my entry 4 the maths comp 2 mr b or do I have 2 bring it in on a stick?
Ella,
What answer have you got for the cross section of the trapezium?
Why are you multiplying by 420?
JT
Harriet,
Q14 Work out the cross section area from the diagram!!!
Q16 Use the info on the diagram (oh dear!!)
JT
Aggie,
Think it’s OK to e-mail the photo entries.
JT
Aggie,
Use the diagrams to get the info you need to work out the area of cross section, then use V=Al
JT
Ok thanks i don’t have my maths book with me at the moment but i will go downstaris and see if i can work it out!
Harriet
Hi Mrs Tibble, I am really stuck on the homework you told me to do. Pg 276, I wasn’t in the lesson so I don’t really understand what to do. I have the notes but I still can’t work it out.
Whole circle circumference is pi x r x 2
So for Q1, length of arc is ’60 360ths’ of this circumference: (60/360) x pi x r x 2
Whole circle area is pi x r x r ok?
So for Q1 the area of the sector is ’60 360ths’ of this whole area: (60/360) x pi x r x r
OK?
Hi Mrs Tibble.I was just wondering, for questions 18-29 of the homework, can i record all of the vectors on the same graph?
hi mrs tibble,
i am really confused on what to do if only one of the numbers in the brackets in minus. You see the to number in the brackets is 2 and then the bottom is -4 so would you have it like it would be if it was just minus’ and would the arrow be pointing down?
Harriet
GET IT DON’T WORRY…. YAY IM SO HAPPY!
harriet
I am stuck on finding out the centre of enlargement for questions 3,4 and 6. Please could you help me? Thank you
Hi Ella,
Join the corresponding corners of the object and image – like they’ve done in 1 and 2, ie A to A’ and B to B’ etc. The centre is where your 3 lines cross.
JT
I am still confused because when I joined the lines up they came to a different centre than the one that I thought it was. I’ll try and give it a go if I can! Thank you
Hi Ella,
If they all cross at the same point then you have found the centre of enlargement – even if it wasn’t where you expected it to be!
JT
PS How was the trip to CadburyWorld?
Am really stuck on Mr. Atkins homework and we have also not made any notes- so am even more confused!!! p229 ex 11c
(It was really good!)
Thank you
Hi Ella,
Try to think of 2 numbers which, when you multiply them, give an answer of zero. Reply telling me what they are, then I’ll give you the next step.
JT
The question that I am most stuck on is x(x-6)=0
Thank you
Ella, you haven’t answered my question! Answering that will give you the key to the whole topic! Look at the worked example in the box too.
hey Mrs T, did we have 2 hand in our bks at any point?
No Aggie – you didn’t have homework after your test.
kk thats gd…its so confusing having 2 teachers :S
How do you cope with 5 a day then? lol
lol I meen having 2 maths teachers,cause you and mr atkins set us differet things and different deadlines…
Anyway lol..could you help me with my maths h/w?
Pg 231 Q12…I’m not sure what do do with the signs when I have to solve the equations.
Thanks
Hi Aggie,
Only just seen this as I was at school for the concert.
As the number term is -8, the signs in the brackets will be different.
Therefore you are looking for 2 numbers which multiply to give -8, and add to give -2.
Since the negatives win in the middle, it’s the larger of the 2 numbers which is the negative one.
Does that help?
oh yes, that helps alot, thanks..oh btw how did the concert go?
For questions 5-8 on the homework, do we have to draw them or can we just write like ‘Clockwise’ etc?
Hi Ella,
It’s not ‘like’ anything!! It either is or isn’t!
It’s up to you whether you want to draw the diagram or just give a full description of the 2 transformations. Having the diagram means you won’t need to refer to the text book when you revise this topic, so it will save you time in the long run.
JT
Mrs Tibble, I am really stuck on the maths homework that you set last week. I had a go the day it was set and I handed it in on Friday, but then you gave it back to me. I did as best as I could but I was just wondering if you could explain it to me. I didn’t get a very good mark, so you asked me to improve it.
The questions are: pg 300. Ex 14F. Qu 1-8.
Zoe
Hi Zoe,
Did you mess up both parts or just 5-8? Looking at your mark, I think Q1-4 weren’t finished. Each question has 2 transformations where you start with the object in the diagram, then draw the image produced by the first transformation, then use that image for the next transformation.
eg Q2. Start with the black triangle. Rotate it 90 deg clockwise about (3,2) which means pin your tracing paper down at the point (3,2), turn it 90 deg clockwise and draw the 1st image where this has ended up. Now take what you have just drawn and reflect it in the x axis.
In Q3 you need to reflect the first image in the line x=2 which is a vertical line cutting through 2 on the x axis.
Q4 after the reflection, translate your image 2 to the right and 3 down.
Questions 5-8: the diagrams have been drawn for you. You have to decide on 2 transformations which could have been used to produce those diagrams. There are lots of possibilities which work – just make sure you describe them correctly ie say what you have done (reflection, translation, rotation) and then the usual info about angles, sense, centres or mirror lines etc.
Does that help? When you have done Q5 tell me so I can see if you are on the right lines.
JT
THANK YOU SOO MUCH!!! I’ve now done questions 1-4 and I now understand it
……… but I’ve been soooooo stupid and I have forgotten to bring my maths text book home, so I cant do questions 5-8 
I know that we have maths with you tomorrow, but i was wondering if I could complete this homework tomorrow evening and hand it in first thing on Tuesday morning???
Zoe
Hi Zoe,
Lesson isn’t till period 4 so you could do it at lunchtime.
JT
Okay. If I still don’t understand it, can I please come and see you after school, or during lunch time?
Zoe
Of course you can. I might need to give some lesson time to it as quite a few people got stuck in different places.
Thank-you very much!!
Zoe
Mrs. Tibble,
I am stuck on questions 6, 8 and 10 on the homework. I still don’t understand the half thing!
Hi Ella,
Sorry it’s late – 6th form parents’ evening tonight.
Q6 just means half of the bracket so work the bracket out first, then s is half of that.
Q8 work out the bracket and square it – no half there so what’s the problem?
Q10 a is b times c take away half of d times c.
JT
Oh I think I understand now! I will try and hand my book in after break. Thank you!
I’m really struggling with some Maths that Mr. Atkins gave us- they’re not in the text book or anything but the questions are: 2. x+4<3 3. x+124 5. x-9<2. I am not sure how to get to the second stage of the equation when the numbers have to be taken over to one side.
Ella
Hi Ella,
Think of it in words:
x plus 4 has to be less than three.
Try some values and see if they work, then think about why they do/don’t work. Then you’ll realise what is going on.
Come back when you’ve done the first one.
JT
Oh! I think I understand that question- the x can’t be any bigger than -1 can it? Do I just do the same for the other questions? Thank you!
Hi Ella,
Yes that’s right, although you should give the answer in terms of what x should be, rather than what it can’t be ie x is less than -1.
Oh no! I’ve looked at the questions again and I’m still a bit stuck- can I ask you after the lesson tomorrow?
I am still stuck on the same questions! I’m in choir so won’t be in the maths lesson tomorrow- should I hang onto my book or give it in?
Hii Mrs Tibble,
On questions 3 in the GCSE practice bk do we do the calculations and the s.f thingy on our calculators?
Hi Aggie,
Yes – like the ones you did in class.
JT
thanks Mrs Tibble I was stuck on those ones too…. thanks aggie for asking!
yay lool I’m so clever 4 asking!
mrs tibble
im really confused about question 6 on the homework. I don’t understand the part where it says and give the answer to the nearest whole number. Does it mean for example Question 6 when i typed 41 divided by 8 and 5.125 then the answer would be 5?