The question is asking 'how many different ways can we pair two diplomats to shake hand'?
The combination formula is given by:

We have n = 25 and r = 2
Substituting into the formula we have

handshakes
3 3/5 is what you're looking for :)<span />
I hope you can open the attachment.
The expression is 2x + 5
starting at 1 and ending at 8
Answer:
252 ft2 (squared)
Step-by-step explanation:
area= a x b
area= 12 x 21
area= 252 ft2 (squared)
Answer:
5u + 6
Step-by-step explanation:
because 5u does not have any like terms, it stays on its own. the 2 and 4 can be added together because they are the same as eachother, leaving you with 5u + 6:)
hope this helps!