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hodyreva [135]
3 years ago
8

Solve this system of linear equations. Separate

Mathematics
1 answer:
Svet_ta [14]3 years ago
8 0
-3(-4x + 2y = 12) 2(-13x + 3y = 46)
12x -6y = -36 -26x + 6y = 92

12x - 6y = -36
-26x + 6y = 92
-14x 0 = 56
-14x/-14 = 56/-14.
X = -4.



-4x + 2y = 12
-4(-4) + 2y = 12
16 + 2y = 12
-16. -16
2y/ 2 = -4/2
Y = -2

-4x + 2y = 12
-4(-4) + 2(-2) = 12
16 -4 = 12
12 =12

(-4,-2)
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A company surveyed 2,600 North American airline passengers and reported that approximately 75% said that they carry a smartphone
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The probability that exactly six out of ten carry a smartphone when travelling is; <u><em>P(6) = 0.146</em></u>

The missing part of the question is;

The probability distribution of x is the binomial distribution with n = 10 and p = 0.75.

Calculate P(6)

  • This is a binomial <em>probability distribution</em> problem that has a general formula as; P(x) = ⁿCₓ × pˣ × q⁽ⁿ ⁻ ˣ⁾

Where;

p is probability of success

q is probability of failure

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In this question;

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q = 1 - p

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q = 0.25

Since six passengers are randomly selected, then applying the formula earlier quoted, we have;

P(6) = ¹⁰C₆ × 0.75⁶ × 0.25⁽¹⁰ ⁻ ⁶⁾

P(6) = 0.146

Read more at; brainly.com/question/24239758

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