Recent content by Kenny09

What if we take division of the polynomial ? ( x3 + x2 - 10x + 8 ) / ( x-1)

I actually got it myself . One person shakes hand with 7 others . And there're 8 times of that action ? ( Because we have 8 people ) so 42 ? . But i found it nothing to do with combination nor permutation . What's the difference between them ? By the way does anybody know what is alpha-numeric...

No i mean about the change of a can . It should be heat supplied = heat gained isn't it ? Q of Copper cube = Q of can + Q of Water ? If can and water are only one object then why would they give us C of aluminum ?

Supposing there're 3 people . One person shakes hand with 2 others ? and there're 9 hand shakes using my method and is it actually 2 hand shakes ? What's the equation for this ?

Homework Statement A copper cube mass of 110g is heated to a temperature of 100 celsius degrees and then rapidly transferred to a well insulated aluminium can of mass 80g containing 200g of water at 10 C degrees . If the final temperature of the cube and water ( after stirring ) is 14 C ...

Homework Statement There're 8 people in the room and each person shakes hand with the other . Homework Equations How many hand shakes are there ? The Attempt at a Solution One person will shake hand with 7 other people and so on . As a result there should be 8 power of 7 but the...

^^ I actually just got it myself . If we think geometrically like for clockwise u can have 4 choices for labeling the first vertex then for the next 3 vertexes u can only have one choice for each . Therefore it's 4 for a , 8 for b and for c . I have 4 choices for vertex A , 3 for vertex B and 2...

I can see it quite easily in my mind but like the theory to get it seems quite complex . According to the concept of the product of principle . So there are 4 ways to label A , either is B,C,R . Then isn't it supposed to be 4 x 4 x 4 x 4 ?

I`m now struggling with the same problem . Can you pls show working for part a and b as well ? As the principle product stated , so the answer for a must be 8 but in the answer key it's 4 ? Can you explain why ?