20 people show up to a post-pstat 120a party. if everyone shakes hands with everyone else, how many handshakes take place

There are 190 handshakes takes place.

Step-by-step explanation:

Since we have given that

Number of people in the party = 20

Here, n = 20

So, the number of handshakes would be

Hence, there are 190 handshakes takes place.

0.85 or 85%

step-by-step explanation:

1) divide 23 by 27

2) round the decimal to the nearest 10

3) so your answer would be 0.85 or 85%