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part b) is 3/4b right? could you write just that because that is one of the ways to get from O to P or do you have to write 1/4 a as well because that is another way you could get there.

part b) is 3/4b right? could you write just that because that is one of the ways to get from O to P or do you have to write 1/4 a as well because that is another way you could get there.

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#2

(Original post by

http://prnt.sc/b4b15n

part b) is 3/4b right? could you write just that because that is one of the ways to get from O to P or do you have to write 1/4 a as well because that is another way you could get there.

**junayd1998**)http://prnt.sc/b4b15n

part b) is 3/4b right? could you write just that because that is one of the ways to get from O to P or do you have to write 1/4 a as well because that is another way you could get there.

To get from O to P, you could do:

- O to A, then A to P, or
- O to B, then B to P

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(Original post by

no matter which route you take, the answer should be the same.

To get from O to P, you could do:

**surina16**)no matter which route you take, the answer should be the same.

To get from O to P, you could do:

- O to A, then A to P, or
- O to B, then B to P

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#4

(Original post by

ugh hate vectors

**junayd1998**)ugh hate vectors

Do you understand where you went wrong in this question?

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(Original post by

Really? They're one of my favourite bits in maths so far

Do you understand where you went wrong in this question?

**surina16**)Really? They're one of my favourite bits in maths so far

Do you understand where you went wrong in this question?

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#6

(Original post by

Yeah, haha; you need to teach me.

**junayd1998**)Yeah, haha; you need to teach me.

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(Original post by

lol post any vector questions here if you get stuck and I'm sure everyone will help out

**surina16**)lol post any vector questions here if you get stuck and I'm sure everyone will help out

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#8

(Original post by

http://prntscr.com/b4cif7 well I'm stuck on this, this is how far i got what do i do from here

**junayd1998**)http://prntscr.com/b4cif7 well I'm stuck on this, this is how far i got what do i do from here

It's just a case of multiplying out that bracket and adding the terms together.

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(Original post by

Ah okay, you've done everything correctly - now all you have to do is simplify it

It's just a case of multiplying out that bracket and adding the terms together.

**surina16**)Ah okay, you've done everything correctly - now all you have to do is simplify it

It's just a case of multiplying out that bracket and adding the terms together.

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#10

I personally find it easier sometimes to use decimals like:

*a - 0.75a + 0.75b*but what you did is perfect

Now do you know how to tidy that expression up a little?

(ie. what to do with: a + -3/4a + 3/4b)

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(Original post by

Yes

I personally find it easier sometimes to use decimals like:

Now do you know how to tidy that expression up a little?

(ie. what to do with: a + -3/4a + 3/4b)

**surina16**)Yes

I personally find it easier sometimes to use decimals like:

*a - 0.75a + 0.75b*but what you did is perfectNow do you know how to tidy that expression up a little?

(ie. what to do with: a + -3/4a + 3/4b)

http://prntscr.com/b4cu91 that?

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#12

What you want to do is

*1 - 3/4*for the a term and then leave b as it is

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(Original post by

No, what did you do to get to that?

What you want to do is

**surina16**)No, what did you do to get to that?

What you want to do is

*1 - 3/4*for the a term and then leave b as it is
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#14

(Original post by

Where does 1 come from ? ugh im confused

**junayd1998**)Where does 1 come from ? ugh im confused

a + -3/4a + 3/4b

a is the same as 1a, we just don't put the 1 there as it adds no meaning.

I'm guessing we need to go over fractions?

**Example 1:**

*2/3 - 1/6*

To add/subtract fractions, you must have a common denominator.

The lowest common multiple of 3 and 6 is 6, so you want the denominator of both fractions to be 6.

2/3 can be written with 6 as the denominator if you multiply the fraction by 2/2 (you are not changing the value as 2/2 is the same as 1)

2 * 2 = 4, 3 * 2 = 6. So you get 4/6.

Now you can subtract the fractions.

4/6 - 1/6 = (4-1)/6 = 3/6 --> you can then simplify this to 1/2.

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Now can you do 1 - 3/4, and see how this would link to the question?

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(Original post by

you have the expression:

a + -3/4a + 3/4b

a is the same as 1a, we just don't put the 1 there as it adds no meaning.

I'm guessing we need to go over fractions?

To add/subtract fractions, you must have a common denominator.

The lowest common multiple of 3 and 6 is 6, so you want the denominator of both fractions to be 6.

2/3 can be written with 6 as the denominator if you multiply the fraction by 2/2 (you are not changing the value as 2/2 is the same as 1)

2 * 2 = 4, 3 * 2 = 6. So you get 4/6.

Now you can subtract the fractions.

4/6 - 1/6 = (4-1)/6 = 3/6 --> you can then simplify this to 1/2.

-------------------------------------------------------------------------------------------

Now can you do 1 - 3/4, and see how this would link to the question?

**surina16**)you have the expression:

a + -3/4a + 3/4b

a is the same as 1a, we just don't put the 1 there as it adds no meaning.

I'm guessing we need to go over fractions?

**Example 1:***2/3 - 1/6*To add/subtract fractions, you must have a common denominator.

The lowest common multiple of 3 and 6 is 6, so you want the denominator of both fractions to be 6.

2/3 can be written with 6 as the denominator if you multiply the fraction by 2/2 (you are not changing the value as 2/2 is the same as 1)

2 * 2 = 4, 3 * 2 = 6. So you get 4/6.

Now you can subtract the fractions.

4/6 - 1/6 = (4-1)/6 = 3/6 --> you can then simplify this to 1/2.

-------------------------------------------------------------------------------------------

Now can you do 1 - 3/4, and see how this would link to the question?

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#16

(Original post by

Yeah 1/4 lmao but I don't see how it links one bit

**junayd1998**)Yeah 1/4 lmao but I don't see how it links one bit

Sorry I'm not very good at explaining and have no idea how else to put it??

1a - 3/4a = 1/4a

add this to the b part and you have:

1/4 + 3/4b

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(Original post by

because you have 1a and you want to subtract 3/4a?

Sorry I'm not very good at explaining and have no idea how else to put it??

1a - 3/4a = 1/4a

add this to the b part and you have:

1/4 + 3/4b

**surina16**)because you have 1a and you want to subtract 3/4a?

Sorry I'm not very good at explaining and have no idea how else to put it??

1a - 3/4a = 1/4a

add this to the b part and you have:

1/4 + 3/4b

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