Answer:
Step-by-step explanation:
We are given the data here that there are 21 teams and that in the tournament, for each opponent, one team has to play with each other twice. The formula to follow here is T = n*(n-1)*z/2 where T is the total number of games played in total in the tournament, n is the number of teams who participated and z is the number of times they have to face in the eliminations. 2 is attributed to prevent the repetition of the count in the reverse of roles of the opponents. In this case, upon substitution, then T =21*20*2/2 = 420 games in total.
Answer:
60.84 cm²
Step-by-step explanation:
The formula for the area of a square is:
A=s²
A=7.8²
A=60.84 cm²
Answer:
243
Step-by-step explanation:
3x3=9
9x3=27
27x3=81
81x3=243
Answer:
x=0
Step-by-step explanation: