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3241004551 [841]

3 years ago

15

How many ways can I choose a president, vice-president, secretary and treasurer for student council from a group of 13 students?

(Hint: Does order matter?)

1 answer:

Hunter-Best [27]3 years ago

3 0

There are 17160 ways to choose

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-0.2x^2+0.9x+0.6=y<br>What's the vertex form for this equation?

hjlf

Answer: y = -0.2(x - 2.25)² + 1.6125

<u>Step-by-step explanation:</u>

$y = -0.2x^2 + 0.9x + 0.6\\\\y - 0.6 = -0.2x^2 + 0.9x\\\\y - 0.6 =-0.2(x^2-4.5x)\\\\y-0.6+\underline{(-0.2)(2.25)^2}=-0.2(x^2-4.5x+\underline{2.25^2})\\\\y-0.6-1.0125=-0.2(x-2.25)^2\\\\y-1.6125=-0.2(x-2.25)^2\\\\y=-0.2(x-2.25)^2+1.6125$

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Bella's bedroom is 3 meters wide and 6 meters

tangare [24]

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Step-by-step explanation:

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