Answer:
The answer is 1.
Step-by-step explanation:
If it is 5 or more, you round up. If it is 4 or less, you keep it the same.
Answer:
Refer to the attachment 
Step-by-step explanation:
<h3><u>Diagram</u><u>:</u><u>-</u></h3>

<h3><u>Note</u><u>:</u><u>-</u></h3>
View the ans from Web for complete diagram.
Answer:
(
g
−
f
)
(
a
)
=
g
(
a
)
−
f
(
a
)
(
g
−f
)
(
a
)
=
g
(
a
)
−
f
(
a
)
=
−
3
a
−
3
−
a
2
−
5
=
−
a
2
−
3a
−
8
Step-by-step explanation:
Answer:
<em>5</em><em> players participated in the tournament.</em>
Step-by-step explanation:
In a small chess tournament, 20 matches were played.
Let us assume that n number of players participated in the tournament
As in each game 2 players play, so the number of ways they can play is,

As they played 2 games with every other participant in the tournament.
So the total number of games is,

But it is given to be 20, so





As
, so we get n=5.
Therefore, 5 players participated in the tournament.