Mathematics: In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?

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In a singing competition, there are 150 participants.

Ответ:

bfredfred3668

09.03.2022

Mathematics

$=150\cdot{0.4^n}$

Step-by-step explanation:

Let n be the number of rounds. Lets look at n=1 which is round one. Therefore if 40% of the contestants are eliminated then we can write an expression of the number of contestants eliminated:

$=150\cdot{0.4}$

For round two, n=2:

$=150\cdot{0.4)\cdot{0.4}=150\cdot{0.4^2}$

Therefore for the n number of rounds:

$=150\cdot{0.4^n}$

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In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?

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