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Ket [755]
3 years ago
3

100 computer techies come to a conference Each of them exchanges a buisness card with the others .How many cards are exchanged

Mathematics
2 answers:
lozanna [386]3 years ago
6 0

nation:

Answer:

n(n-1)/2.

So, if there are 100 "techies" then put 100 into the equation.

100(100-1)/2------the equation

100(99)/2------simplified

9900/2------- 100*99

4950-----THE ANSWER!!!

So, there would be 4950 cards exchanged!

Musya8 [376]3 years ago
6 0
The answer is n(n-1)/2 I just took the test.
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7 0
2 years ago
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Really easy points!!!!!! Please solve for all three answers.
katen-ka-za [31]

Answer:

1/64, 1/256, 1/1024

Step-by-step explanation:

To get from 16 to 4 we multiply by 1/4

To get from 4 to 1 we multiply by 1/4

Each time we multiply by 1/4

The next term would be 1/16 * 1/4

1/16 * 1/4 = 1/64

The take that term 1/64 and multiply by 1/4

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8 0
4 years ago
Kahleela starts the engine on her small private airplane. The engine drives a propeller with a radius of 8.5 feet and its center
algol13

Answer:

a=21.1

Step-by-step explanation:

You can use the given (incorrect) equation and fill in the value of t to find h:

 h = 12.5 +9sin(750(3.5)) = 3.68 . . . . feet

__

Or, you can use the correct equation, or just your knowledge of revolutions:

 h = 12.5 +9sin(750(2π·3.5)) = 12.5 . . . . feet

in 3.5 minutes at 750 revolutions per minute, the propeller makes 2625 full revolutions, so is back where it started — at 12.5 feet above the ground.

4 0
3 years ago
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