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Gre4nikov [31]
3 years ago
8

A mathematician decided to throw a party.When all the guests arrived, she joined the party with her husband. Including the mathe

matician and her husband,there were five couples,making the total number of people in attendance 10. After several minutes of mingling and introductions the mathematician asked each of the nine others in attendance how many people they shook hands with. Each person gave her a different answer from 0 to8. If couples did not shake hands with each other, how many people did the mathematician's husband shake hands with?
Mathematics
1 answer:
joja [24]3 years ago
8 0
All of them, he didn't meet himself and his wife. Think of the rule of Gaos
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2 - 3d = 4d - 19<br><br>Answer and show steps​
defon

2 - 3d = 4d - 19

Add the opposite to both sides to get the variable on the left side only.

2 - 3d = 4d - 19

   -4d    -4d

2 - 7d = - 19

Then get the terms w/o variables on the right,

2 - 7d = - 19

-2            -2

-7d = -21

Then divide by the number paired with the variable.

--7d = -21

-----    -----   ;   d = 3

-7       -7

Final answer = 3

Hope I helped :)

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iris [78.8K]
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