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Fittoniya [83]
2 years ago
9

Ume

Mathematics
1 answer:
katrin2010 [14]2 years ago
8 0

Answer:

see explanation

Step-by-step explanation:

Given the 2 equations

x + 2y = 10 → (1)

2y² - 7y + x = 0 → (2)

Rearrange (1) expressing x in terms of y by subtracting 2y from both sides

x = 10 - 2y → (3)

Substitute x = 10 - 2y into (2)

2y² - 7y + 10 - 2y = 0

2y² - 9y + 10 = 0 ← in standard form

(y - 2)(2y - 5) = 0 ← in factored form

Equate each factor to zero and solve for y

y - 2 = 0 ⇒ y = 2

2y - 5 = 0 ⇒ 2y = 5 ⇒ y = \frac{5}{2}

Substitute these values into (3) for corresponding values of x

y = 2 → x = 10 - 4 = 6 ⇒ (6, 2 ) → B

y = \frac{5}{2} → x = 10 - 5 = 5 ⇒ (5, \frac{5}{2} ) → A

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The output from a statistical computer program indicates that the mean and standard deviation of a data set consisting of 200 me
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The limit that 97.5% of the data points will be above is $912.

Step-by-step explanation:

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Z = \frac{X - \mu}{\sigma}

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hello,

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