21x + 28 = 156 - 2
21x = 154 - 28
21x/21 = 126/21
X = 6
Its 5 because you have to change 28 into a fraction by putting a one under like so 28/1
Answer:2000
Step-by-step explanation:
mutiply
306.9 * 6.4
=1964.16
to one significant figure
=2000
The equation that describes the relation between the number of games (g) and the number of teams (n) is given as follows:
g = n^2 - n
Now, we are given that the number of games is 132. This means that g=132. To know the number of teams, substitute with the given g in the given equation as follows:
g = n^2 - n
132 = n^2 - n
n^2 - n - 132 = 0 .......> factorize this expression
(n-12)(n-11) = 0
This means that:
either n = 12 teams
Or n = -11 teams (this solution is rejected as the number of teams cannot be negative)
Therefore, based on the above calculations, if the number of games is 132, then, the number of teams is 12
