Hey there! Sign in to join this conversationNew here? Join for free
x Turn on thread page Beta
    • Thread Starter
    Offline

    9
    ReputationRep:
    Name:  IMG_0919.jpg
Views: 91
Size:  499.4 KB

    Im unsure on how to do the number line part... ugh. Could anyone help. thanks
    • Community Assistant
    Offline

    18
    ReputationRep:
    Community Assistant
    You've done 10-2x<5 wrong, when you divide by a negative number you have to switch the inequality sign.
    • Thread Starter
    Offline

    9
    ReputationRep:
    (Original post by NotNotBatman)
    You've done 10-2x<5 wrong, when you divide by a negative number you have to switch the inequality sign.

    ohhh my bad. So its x >2.5?
    • Community Assistant
    Offline

    20
    ReputationRep:
    Community Assistant
    (Original post by junayd1998)
    ohhh my bad. So its x >2.5?
    Yep. Why didn't you just move the 2x across as well as the 5?

    You'd get 5<2x and just divide by 2. No need to mess around with negatives.
    • Community Assistant
    Offline

    18
    ReputationRep:
    Community Assistant
    (Original post by junayd1998)
    ohhh my bad. So its x >2.5?
    Yes.

    When you draw the number line, you just need to see the region where it overlaps, to see where both inequalities hold.
    • Thread Starter
    Offline

    9
    ReputationRep:
    (Original post by RDKGames)
    Yep. Why didn't you just move the 2x across as well as the 5?

    You'd get 5<2x and just divide by 2. No need to mess around with negatives.
    Yeah thats true my bad.
    • Thread Starter
    Offline

    9
    ReputationRep:
    (Original post by NotNotBatman)
    Yes.

    When you draw the number line, you just need to see the region where it overlaps, to see where both inequalities hold.
    Oh okay i get it i got X>3
    Offline

    3
    ReputationRep:
    (Original post by junayd1998)
    Oh okay i get it i got X>3
    Yes, that's right.
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: September 5, 2016
Poll
Do you agree with the proposed ban on plastic straws and cotton buds?
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.