Turn on thread page Beta
    • Thread Starter
    Offline

    18
    ReputationRep:
    So I thought I’d use the formula to work out the distance between B and S but this is a non calc question and I get a lot of decimals so was wondering what my next step is?
    Name:  0F09B057-C828-4251-8F1C-61ACAA217C9C.jpg.jpeg
Views: 23
Size:  14.6 KB
    Posted on the TSR App. Download from Apple or Google Play
    • Study Helper
    Offline

    15
    Study Helper
    (Original post by Y11_Maths)
    So I thought I’d use the formula to work out the distance between B and S but this is a non calc question and I get a lot of decimals so was wondering what my next step is?
    If the distances are in a certain ratio on a stright line, then so are the differences in the x-coordinates, and the differences in y-coordinates.

    Should have covered that in your textbook - similar triangles.
    • Thread Starter
    Offline

    18
    ReputationRep:
    (Original post by ghostwalker)
    If the distances are in a certain ratio on a stright line, then so are the differences in the x-coordinates, and the differences in y-coordinates.

    Should have covered that in your textbook - similar triangles.
    Ok thanks
    Posted on the TSR App. Download from Apple or Google Play
    • Thread Starter
    Offline

    18
    ReputationRep:
    (Original post by ghostwalker)
    If the distances are in a certain ratio on a stright line, then so are the differences in the x-coordinates, and the differences in y-coordinates.

    Should have covered that in your textbook - similar triangles.
    Hmm I still can’t quite figure it out, how can I use the coordinates?
    Posted on the TSR App. Download from Apple or Google Play
    • Study Helper
    Offline

    15
    Study Helper
    (Original post by Y11_Maths)
    Hmm I still can’t quite figure it out, how can I use the coordinates?
    The ratio of the difference in the x-coordinates of T and B, to the difference in the x-coordinates of B and S, in 2:5.

    Similarly for y.
    • Thread Starter
    Offline

    18
    ReputationRep:
    (Original post by ghostwalker)
    The ratio of the difference in the x-coordinates of T and B, to the difference in the x-coordinates of B and S, in 2:5.

    Similarly for y.
    Is my x coordinate for T 13?
    Posted on the TSR App. Download from Apple or Google Play
    • Community Assistant
    Offline

    17
    ReputationRep:
    Community Assistant
    To answe this:

    1) Calculate the point B (it's practically given in the problem)
    2) We know TB/BS = 2/5. You know the change in X within BS = 48-23 = 25. 25/5 x 2 = 10 meaning the change in X in TB = 10 which therefore means that 23-10 = 13. X coordinate is 13 (as you correctly mentioned)
    3) Use a similar method to find the y value.
    • Study Helper
    Offline

    15
    Study Helper
    (Original post by Y11_Maths)
    Is my x coordinate for T 13?
    Yes.
    • Thread Starter
    Offline

    18
    ReputationRep:
    Is my Y value 19?
    Posted on the TSR App. Download from Apple or Google Play
    • Community Assistant
    Offline

    17
    ReputationRep:
    Community Assistant
    (Original post by Y11_Maths)
    Is my Y value 19?
    Yep.
    Offline

    20
    ReputationRep:
    your x and y are correct

    :borat:
    • Thread Starter
    Offline

    18
    ReputationRep:
    Thanks for the help everyone 🙂
    Posted on the TSR App. Download from Apple or Google Play
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: February 2, 2018

University open days

  1. University of Cambridge
    Christ's College Undergraduate
    Wed, 26 Sep '18
  2. Norwich University of the Arts
    Undergraduate Open Days Undergraduate
    Fri, 28 Sep '18
  3. Edge Hill University
    Faculty of Health and Social Care Undergraduate
    Sat, 29 Sep '18
Poll
Which accompaniment is best?
Useful resources

Make your revision easier

Maths

Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

Equations

How to use LaTex

Writing equations the easy way

Student revising

Study habits of A* students

Top tips from students who have already aced their exams

Study Planner

Create your own Study Planner

Never miss a deadline again

Polling station sign

Thinking about a maths degree?

Chat with other maths applicants

Can you help? Study help unanswered threads

Groups associated with this forum:

View associated groups

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

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