Suppose there are 20 persons in a birthday party. How many handshakes are there altogether if everyone shakes hands with each other?
questions:
a. what is the equation of the function?
b. how did you get the equation?
c. if there are 100 persons, how many handshakes are there given the same condition?


2

Answers

2014-09-17T21:10:59+08:00
One person handshakes 19 people because he cant handshake himself.
19 handshakes per person
 20 people
so
19x20 = 380 handshakes
a.)
f(x) = x(x-1)
b.) by looking the solution 19 is 20-1 which is x
c.100(100-1) = 9900 handshakes
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2014-09-18T09:35:06+08:00
Wait lng po ..ang hrap po ksi isolve ng mentally ..wait  nio po answer ko

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