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alukav5142 [94]
4 years ago
14

There are 20 players in a table tennis competition. each player must play exactly one match against every other player. how many

matches are there in the competition?
Mathematics
1 answer:
Flauer [41]4 years ago
7 0
There are 10 matches in the competition if you count every other player you'll end up with 10

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Please answer all 5 xoxo <3
romanna [79]

Answer:

First Image:         Option D

Second Image:   Option D

Third Image:       Option C

Fourth Image:     Option B

Fifth Image:         Option B

Step-by-step explanation:

<u>First Image:</u>

  • Supplementary angles is two angles whose sum is 180 degrees (straight line)
  • 180 - 47 = 133°
  • ? is an obtuse angle is any angle greater than 90° which checks the answer

<u>Second Image:</u>

  • A triangle angles adds up to 180°
  • Two angles are already given
  • 72 + 45 + ? = 180° → 117 + ? = 180° → ? = 63°
  • ? is an acute angle is an angle that measures between 90° and 0°

<u>Third Image:</u>

  • Supplementary angles is two angles whose sum is 180 degrees (straight line)
  • 180 - 110 = 70°
  • ? is an acute angle is an angle that measures between 90° and 0°

<u>Fourth Image:</u>

  • Supplementary angles is two angles whose sum is 180 degrees (straight line)
  • 180 - 120 = 60°
  • we are shown a right angle which = 90°
  • A triangle adds up to 180°
  • 180 - 90 - 60 = 30
  • ? = 30°
  • ? is an acute angle is an angle that measures between 90° and 0°

<u>Fifth Image:</u>

  • Supplementary angles is two angles whose sum is 180 degrees (straight line)
  • 180 - 85 = 95°
  • ? is an obtuse angle is any angle greater than 90° which checks the answer

Learn more about Triangles here: brainly.com/question/4186813

5 0
2 years ago
PLEASE HELP RLLY NEED ANSWER
igomit [66]

Answer:

97.5

Step-by-step explanation:

Supplementary means the angles add up to 180°

So,

m∠A = 180 - m∠B

m∠A = 180 - 82.5

m∠A = 97.5

8 0
3 years ago
2-94. Multiple choice: which of the following numbers could not represent a probability? Write a sentence explaining why they co
ziro4ka [17]

Answer:

it is A

Step-by-step explanation:

it has to be a because you cant have a negative chance at chosing something it would just be zero B.you have a 1.00 chance at chosing something C.you have a 1 oit of 100 chance at chosing something and D.you have a 1 out of 10 chance at chosing something

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4 years ago
Find the area of the parallelogram
BartSMP [9]
6*14=84
the answer is 84cm²
7 0
4 years ago
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Martey drew a model of the shool library
vova2212 [387]

Answer:

Q?

Step-by-step explanation:

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