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3 years ago

Answer for brainliest

Mathematics

2 answers:

Andrew [12]3 years ago

6 0

Answer:

Step-by-step explanation:

trasher [3.6K]3 years ago

3 0

ANSWER= D (-2, 10)

Explanation—> -3(-2)+2(10)=14
(-6)+20=14
14=14 * it works !
x=-2 & y= 10

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luda_lava [24]

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3 years ago

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jenyasd209 [6]

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3 years ago

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Illusion [34]

Answer:

The right answer is:

(a) 0.1456

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Step-by-step explanation:

Given:

N = 24

n = 5

r = 7

The improperly drilled gearboxes "X".

then,

⇒ $P(X) = \frac{\binom{7}{x} \binom {17}{5-x}}{\binom{24}{5}}$

(a)

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= $\frac{\binom{7}{0} \binom{17}{5}}{\binom{24}{5}}$

= $0.1456$

(b)

According to the question,

$X = 91+5$

Mean will be:

⇒ $\mu = E(x)$

$=E(91+5)$

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$=18.125$

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$=V(9Y+5)$

$=81.V(Y)$

$=81.n.\frac{r}{N}.\frac{N-r}{N}.\frac{N-n}{N-1}$

$=81.5.\frac{7}{24}.\frac{24-7}{24}.\frac{24-5}{24-1}$

$=69.1202$

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3 years ago