Maths year 11

Announcements Posted on
Four things that unis think matter more than league tables 08-12-2016
    Offline

    2
    ReputationRep:
    (Original post by z_o_e)
    So I need to work out one red and one white and add them up?

    Posted from TSR Mobile
    You need the probability of getting a red disk in disk 1 and then a while disk in disk two, then you need to find the probability of getting a while disk then a red disk then add them up

    so 6/9 * 3/9 + 3/9 * 6/9 = P(R,W)+P(W,R)
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by 34908seikj)
    You need the probability of getting a red disk in disk 1 and then a while disk in disk two, then you need to find the probability of getting a while disk then a red disk then add them up

    so 6/9 * 3/9 + 3/9 * 6/9 = P(R,W)+P(W,R)
    Tyyx

    What about this



    Posted from TSR Mobile
    Attached Images
      
    Offline

    2
    ReputationRep:
    (Original post by z_o_e)
    Tyyx

    What about this



    Posted from TSR Mobile
    Part B is wrong
    Probability of one homework has two paths.

    If maths no homework then english home work and maths homework then english no home work

    or

    P(H,NH) and P(NH,H)

    Try it again now. Remember once you find the probability of both outcomes, you need to add them together.
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by 34908seikj)
    Part B is wrong
    Probability of one homework has two paths.

    If maths no homework then english home work and maths homework then english no home work

    or

    P(H,NH) and P(NH,H)

    Try it again now. Remember once you find the probability of both outcomes, you need to add them together.
    Done xx

    Posted from TSR Mobile
    Attached Images
     
    Offline

    2
    ReputationRep:
    Could you show the full question?
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by 34908seikj)
    Could you show the full question?


    Posted from TSR Mobile
    Attached Images
     
    Offline

    2
    ReputationRep:
    Yeah, it's right lol. I was a little confused with what you were doing.
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by 34908seikj)
    Yeah, it's right lol. I was a little confused with what you were doing.
    Haha ha thank you x

    Posted from TSR Mobile
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by 34908seikj)
    Yeah, it's right lol. I was a little confused with what you were doing.
    Topic list


    Posted from TSR Mobile
    Attached Images
      
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by 34908seikj)
    Yeah, it's right lol. I was a little confused with what you were doing.
    Heres topic list of this year x


    Posted from TSR Mobile
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by 34908seikj)
    You need the probability of getting a red disk in disk 1 and then a while disk in disk two, then you need to find the probability of getting a while disk then a red disk then add them up

    so 6/9 * 3/9 + 3/9 * 6/9 = P(R,W)+P(W,R)
    I'm not sure on the units for this questions I have to find the mass. The title of this work is called compound measure.



    Posted from TSR Mobile
    Attached Images
     
    Offline

    2
    ReputationRep:
    (Original post by z_o_e)
    I'm not sure on the units for this questions I have to find the mass. The title of this work is called compound measure.



    Posted from TSR Mobile
    What's 1KM?

    KM usually refers to a measurement of distance (kilometres), not volume. Are you sure that's right? Can you show the question please?
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by 34908seikj)
    What's 1KM?

    KM usually refers to a measurement of distance (kilometres), not volume. Are you sure that's right? Can you show the question please?
    Yes it's right.
    This was set as homework to complete this table.



    Posted from TSR Mobile
    Attached Images
     
    Offline

    3
    ReputationRep:
    (Original post by z_o_e)
    I'm not sure on the units for this questions I have to find the mass. The title of this work is called compound measure.



    Posted from TSR Mobile
    You can't use the formula with density in terms of g per cm^3 and volume in km^3

    How many cm in a km and therefore how many cm^3 in a km^3 - think about it before you answer




    Posted from TSR Mobile
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by gdunne42)
    You can't use the formula with density in terms of g per cm^3 and volume in km^3

    How many cm in a km and therefore how many cm^3 in a km^3 - think about it before you answer




    Posted from TSR Mobile
    This is what I don't understand. I don't understand conversions and how to do them.

    Posted from TSR Mobile
    Offline

    3
    ReputationRep:
    (Original post by z_o_e)
    This is what I don't understand. I don't understand conversions and how to do them.

    Posted from TSR Mobile
    How many cm in a m
    How many m in km
    So how many cm in a km

    Now imagine a cube that measures 1 km in each direction, how would you calculate its volume


    Posted from TSR Mobile
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by gdunne42)
    How many cm in a m
    How many m in km
    So how many cm in a km

    Now imagine a cube that measures 1 km in each direction, how would you calculate its volume


    Posted from TSR Mobile
    I don't know conversions :/

    Posted from TSR Mobile
    Offline

    3
    ReputationRep:
    (Original post by z_o_e)
    I don't know conversions :/

    Posted from TSR Mobile
    There are 100000 cm in 1 km. So in 1cm3 there are 100000^3 in 1km3 =1015 km3.
    Offline

    3
    ReputationRep:
    (Original post by z_o_e)
    I don't know conversions :/

    Posted from TSR Mobile
    You don't know that there are 100 cm in a m?
    or 1000 m in 1 km?
    So 100 x 1000 cm in a km


    Posted from TSR Mobile
    Offline

    2
    ReputationRep:
    (Original post by z_o_e)
    Yes it's right.
    This was set as homework to complete this table.



    Posted from TSR Mobile
    Copper- 89.62 g/cm^3 - 14700 / 164

    Air - 15.38 m^3 - 20kg * 0.0013g/cm^3 then I just converted it into M^3, however it's probably easier to convert the 0.0013g/cm^3 in m^3 first.

    Edit: I did hydrogen wrong.
 
 
 
Write a reply… Reply
Submit reply

Register

Thanks for posting! You just need to create an account in order to submit the post
  1. this can't be left blank
    that username has been taken, please choose another Forgotten your password?
  2. this can't be left blank
    this email is already registered. Forgotten your password?
  3. this can't be left blank

    6 characters or longer with both numbers and letters is safer

  4. this can't be left empty
    your full birthday is required
  1. Oops, you need to agree to our Ts&Cs to register
  2. Slide to join now Processing…

Updated: December 3, 2016
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

Poll
Do you think you'll achieve your predicted A Level grades?
Study resources

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Quick reply
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.