1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Hunter-Best [27]
3 years ago
8

In a chess tournament, each player plays every other player exactly once. If it is known that 105 games were played, how many pl

ayers were there in the tournament?
Mathematics
1 answer:
diamong [38]3 years ago
3 0

Answer:

15 players played in the chess tournament.

Step-by-step explanation:

When there are 15 players, the first player plays 14 games and step aside.

remaining 14 player

next player plays 13 games. steps aside

remaining 13 players

next player plays 12 games. steps aside

remaining 12 players

next player plays 11 games. steps aside

remaining 11 players

.

.

.

.

Last player plays 1 game and steps aside

remaining 1 player who will not play against himself.

∴ Sum of all games played

= 14 + 13 + 12 + 11 + 10 + 9 + 8 + 7 + 6 + 5 + 4 + 3 + 2 + 1 = 105 games played

You might be interested in
Which term describes a person's previous pattern of borrowing and repaying?
AleksAgata [21]
The term that describes a person's previous pattern of borrowing and repaying is a credit pattern. That will make the answer to be B.

6 0
3 years ago
Read 2 more answers
Work out the percentage change to 2 decimal places when a price of £15 is decreased to £14.
Greeley [361]

Answer:

The total change is £21.02 from the original amount of £78.98. Therefore, the percentage change is directly related to the original amount.

so the answer in a percentage is 15.22%.

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Can ya help me out ?? Thanks
ArbitrLikvidat [17]

Answer:

n=1

can you also please mark me as brainliest?

thanks!

5 0
3 years ago
It takes Andre 4 minutes to swim 5 laps.
soldier1979 [14.2K]

It takes Andre 1.25 minutes to swim a lap.

6 0
2 years ago
Read 2 more answers
What is the gradient?
notsponge [240]

Answer:

Gradient = 2

Step-by-step explanation:

Gradient of a line = Slope of the line

Since, slope of a line passing through two points (x_1, y_1) and (x_2,y_2) is given by,

Slope = \frac{y_2-y_1}{x_2-x_1}

Given line in the graph passes through two points (1, 0) and (2, 2)

Therefore, slope or gradient of the line = \frac{2-0}{2-1}

                                                                  = 2

Gradient = 2 will be the answer.

7 0
3 years ago
Other questions:
  • Robert is writing a paper for language arts class. He can write of a page in of an hour. At what rate is Robert writing?
    10·1 answer
  • Help please I need to pass this class help appreciated
    10·2 answers
  • There are 8 math classes in 7th grade.
    5·1 answer
  • What is the slope of a line perpendicular to the line y=3x+5?
    14·1 answer
  • A mixture of purple paint contains 6 teaspoons of red paint and 15 teaspoons of blue paint. To make the same shade of purple pai
    14·2 answers
  • Holli’s cheerleading uniform cost $89.23. There are 16 cheerleaders on the squad. How much will it cost for all of the uniforms?
    14·1 answer
  • Part 2. Which of the following descriptions represent the transformation shown in the image​
    6·1 answer
  • Help me, save my life.
    10·1 answer
  • A pole that is 2.6 m tall casts a shadow that is 1.26 m long. At the same time, a nearby tower casts a shadow that is 37.25 m lo
    15·1 answer
  • What does the value 40 in the equation y=7.5+40 represent in the context of this situation?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!