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3 years ago

Solve the equation. 2x^2+7=15x

Mathematics

1 answer:

77julia77 [94]3 years ago

3 0

$2x^2+7=15x \\
2x^2-15x+7=0\\
2x^2-x-14x+7=0\\
x(2x-1)-7(2x-1)=0\\
(x-7)(2x-1)=0\\
x=7 \vee x=\frac{1}{2}
$

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Kitty [74]

Answer:

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The probability that conservative party wins exactly two seats is 0.432

Step-by-step explanation:

Consider the provided information.

The probability of a conservative candidate winning is p=0.6.

The probability of one progressive candidate will win is: 1-0.6=0.4

Part (a) What is the probability that the conservative party wins all three seats?

According to binomial distribution: $b(x; n, p) =^nC_xp^x(1- p)^{n-x}$

$P(x=3) =^3C_3(0.6)^3 (0.4)^{3-3}$

$P(x=3) =(0.6)^3$

$P(x=3)=0.216$

P(conservative party wins all 3 seats) = 0.216

Hence, the probability that conservative party wins all 3 seats is 0.216

Part (a) What is the probability that the conservative party wins exactly two seats?

$P(x=2) =^3C_2(0.6)^2 (0.4)^{3-2}$

$P(x=2) =3(0.36)(0.4)$

$P(x=2) =0.432$

Hence, the probability that conservative party wins exactly two seats is 0.432

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3 years ago

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Kamila [148]

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Answer:

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Step-by-step explanation:

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~kaikers

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2 years ago

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