Melody

factorise 4(x+3)+x(x+3)

Think about this:

4A+XA

This is 4 lots of A plus X lots of A

so when you factored it you will have  A(4+X)     or    (4+X) *A

WELL

your question is the same. 

4(x+3)+x(x+3)

This is 4 lots of (x+3)  plus  x lots of (x+3)   

when you put it together you have  (4+x) lots of (x+3)  which is just  (4+x)(x+3)

this woul normally be reorganised as 

(4+x)(x+3)= (x+4)(x+3)

You are not given acceleration    m/s is a velocity NOT an acceleration.

So perhaps the acceleration is 0 in which case the net force is 0 etc etc etc.

I can only think of 1 subset that will meet this restriction. That is the the set of even numbers from 2 to 100 inclusive.

So I think the answer is 1

Hi Geno

It is nice to see you.

That is what I thought but it could be that the 6 was meant to be a 7 in which case it would still be half.

or that we were suppose to include the possibility of a tie, whch would make the problem a tad harder.

Say we were meant to include the possibility of a tie.

Then the outcomes culd be 2:4,   4:2,   or  3:3

I do not think it could be 1:5 or 0:6 because then the series would have finished earlier.

The number of ways a team can win 2 games in 6 is 6C2  =  15

The number of ways a team can win 3 games in 6 is 6C3 =  20

The number of ways a team can win 4 games in 6 is 6C4 = 15

So the probability that they score 3 games each is      20/50 = 4/10

The remaining possibilities are split equally between A and B wining    0.5(1-0.4) = 0.3

So if they play 6 games the probabilities are 

P(tie) = 0.4

P(A wins) = P(Bwins) = 0.3

I don't understand the question.

the series last 6 games is that whether or not anyone has won yet?

So maybe a team won or maybe no-one won?

If a team did win then the chance of it being either team is 50%. I mean 50% each.........

I guess you must mean that maybe no team won?

What about it?

Thanks guest,

That is a good resource :)

The first video explains why it is NOT 1 and NOT 0

But the video is GOOD so thank you Owlface  for giving the address.    

The second video is probably goopd too but I have not watched it :)

There isn't one.

Thanks Alan, :)