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professor190 [17]
3 years ago
11

There are 8 players in a chess tournament. after the tournament each player has to shake hands with e

Mathematics
1 answer:
kati45 [8]3 years ago
8 0
<span>There are 8 players in a chess tournament. After the tournament each player has to shake hands with every other player. Which number sentence below is the best way to show the number of handshakes? 
Answer :
</span><span>7+6+5+4+3+2+1= 28</span>
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I see <br>I think<br>I wonder​
IgorLugansk [536]

Answer:

i think its 2 rectangles

i wonder what the math question is gonna be

Step-by-step explanation:

3 0
3 years ago
Evaluate 3/7 r + 5/8 s when r is 14 and s is 8
forsale [732]

Answer:

11

Step-by-step explanation:

Making the appropriate substitutions, we get

3/7 r + 5/8 s  =>  3/7 (14) + 5/8 (8).

Notice how this can reduced:

                             3(14)            5(8)

                           ----------- +     ---------   =   6 + 5 = 11

                                  7                8

6 0
3 years ago
Simplify 9(x+7)^2/3(x-1)(x+7)
sladkih [1.3K]
9/3 =3
(X+7)^2/ (x+7) = x+7
1/x-1

3(x+7)/x-1

3x+21/x-1

5 0
3 years ago
Scientists tag and release a group of salmon after they hatch. Later, they catch a sample of salmon that return to the river and
Liula [17]

The best prediction of the total number of tagged salmon in a sample of 2000 is 100.

<h3><u>Predictions</u></h3>

To determine what is the best prediction of the total number of tagged salmon in a sample of 2000, the following calculation must be performed:

  • 800 = 40
  • 2000 = X
  • 2000 x 40 / 800 = X
  • 80000 / 800 = X
  • 100 = X

Therefore, the best prediction of the total number of tagged salmon in a sample of 2000 is 100.

Learn more about predictions in brainly.com/question/18152997

7 0
2 years ago
Find the value of x. Round your answer to the nearest tenth.
o-na [289]
Answer should be 4


Explanation: 30 divided by 8 = 3.75

3.75 rounded is 4
5 0
3 years ago
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