You are Here: Home >< Maths

# 2 aqa decision questions watch

Announcements
1. if someone could help me with these tow questions i would be so grateful, i absolutely have no idea how to do these
Attached Images

2. Ha. I did this paper yesterday!

First question is your graph theory:
If there's 5 vertices, the minimum spanning tree will have 4 edges won't it? So the minimum value for the min. span tree has to include the 4 smallest values that can link all 5 vertices.
The maximum must include the biggest and smallest seeing as the graph will have to have all 8 edges in.
The way I did the last part, was to find four values that add up to 53, sketch those, then work out where the other values can fit around that so that the minimum spanning tree remains 53.

What part of the second question do you need hep with?
3. ooooo thanks that makes sense
and the whole of question 7 ;/ i can normally do them questions but when they through inequalities in there i just get confused!
4. 7.a.i
You know that C is the closest point to A. So: AC < (everywhere else A can go). And since it's telling you to compare AC and AB you get:
2x - 4 < x + 6

7.a.ii
You do this is a similar manner, just consider AD and AE. So you'll end up with:
2x - 4 < 3x - 7 and
2x - 4 < 4x - 14
So solve these for x.

7.b.i
This is done in a similar manner as before. The question tells you that CD < CB or CE (CA we don't know). So you then get:
2x - 1 < 3x - 7
2x - 1 < x + 8
Again, solve these for x.

7.b.ii.
From the inequalities you have, you should be easily be able to solve this - given that x is an integer.

7.b.iii.
This should be really easy now that you know x.
5. it actually makes sense now! Thanks so much x

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.

This forum is supported by:
Updated: May 20, 2010
Today on TSR

### Four simple steps to get an A*

Here's all you have to do

### University open days

• University of East Anglia
All Departments Open 13:00-17:00. Find out more about our diverse range of subject areas and career progression in the Arts & Humanities, Social Sciences, Medicine & Health Sciences, and the Sciences. Postgraduate
Wed, 30 Jan '19
• Aston University
Wed, 30 Jan '19
• Solent University
Sat, 2 Feb '19
Poll
Useful resources

### Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams