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GrogVix [38]
4 years ago
5

What is the answer to this problem because I am so confused on this

Mathematics
1 answer:
OlgaM077 [116]4 years ago
7 0
Try this option:
only the 1-st way, where 25x+40x=x(25+40)... =260.
Another way to calculate it is 25*4+40*4=100+160=260.

answer: way 1.
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In one round robin chess tournament, 36 games were played. How many players entered in the tournament?
ICE Princess25 [194]
\displaystyle
\binom{n}{2}=36\\\\
\dfrac{n!}{2!(n-2)!}=36\\
\dfrac{n(n-1)}{2}=36\\
n(n-1)=72\\
n^2-n-72=0\\
n^2-9n+8n-72=0\\
n(n-9)+8(n-9)=0\\
(n+8)(n-9)=0\\
n=-8 \vee n=9

The number of players can't be negative, so there was 9 players.


6 0
4 years ago
In mid-day meal scheme 1/ 10 litre of milk is given to each student of a primary school. If 30 litres of milk are distributed ev
nirvana33 [79]

Answer:

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30 / (1/10) = 300

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4 years ago
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kotykmax [81]

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yes

Step-by-step explanation:

5 0
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Read 2 more answers
The sizes of the angles in degrees of e triangles are.
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3 years ago
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