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schepotkina [342]
3 years ago
15

suki has 54 rock songs 92 dance songs and 12 classical songs on her playlist what is the probability that the song will not be c

lassical song
Mathematics
2 answers:
makvit [3.9K]3 years ago
5 0

Answer:

92.4

Step-by-step explanation:

kvv77 [185]3 years ago
4 0

Answer:

The probability that the chosen song is not a classical song is 92.4%.

Step-by-step explanation:

Given that Suki has 54 rock songs, 92 dance songs and 12 classical songs on her playlist, to determine what is the probability that the chosen song will not be a classical song, the following calculation must be performed:

54 + 92 + 12 = 158

158 - 12 = 146

158 = 100

146 = X

146 x 100/158 = X

14600/158 = X

92.4 = X

Therefore, the probability that the chosen song is not a classical song is 92.4%.

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Roots of Quadratics 50 PTS!!!
noname [10]

The values of k for the different quadratic equation solutions are as follows

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ci the equation -x² + 3x + (k + 1) = 0 has real roots

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<h3>How to solve quadratic equations to get different answers</h3>

Quadratic equations of the form ax² + bx + c = 0 is solved using the formula

-b+\frac{\sqrt{b^{2}-4ac } }{2a}     OR     -b-\frac{\sqrt{b^{2}-4ac } }{2a}

The equation b² - 4ac is called the discriminant and it is used as follows

To solve the equation and get two real roots: 2x² - x + 3k = 0

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substituting the values gives

(-1)² - 4 * 2 * 3k > 0

1 - 24k > 0

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divide through by coefficient of k

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substituting the values gives

(-2)² - 4 * 5 * (2k - 1) = 0

4 - 40k + 20 = 0

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divide through by coefficient of k

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To solve the equation and get real roots  -x² + 3x + (k + 1) = 0

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substituting the values gives  

(3)² - 4 * -1 * (k+1) > 0

9 + 4k + 4> 0

4k > -13

divide through by coefficient of k

k > -3.25

To solve the equation and get  no real solutions  3kx² - 3x + 2 = 0

  • b² - 4ac < 0

substituting the values gives  

(-3)² - 4 * 3k * 2 < 0

9 - 24k² > 0

9 > 24k²

divide through by coefficient of k²

k² < 24/9

k < ± 1.633

Learn more about roots of quadratic equations: brainly.com/question/26926523

#SPJ1

4 0
10 months ago
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allsm [11]

Step-by-step explanation:

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2 years ago
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Step-by-step explanation:

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