3 years ago

Need help please thx you

Mathematics

1 answer:

erma4kov [3.2K]3 years ago

6 0

$72.

20% of 60 is 12

$12 + $60 = $72

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Dmitry_Shevchenko [17]

Chaliye apni maa chudaiye

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2 years ago

The lifetime of two light bulbs are modeled as independent and exponential random variables X and Y, with parameters lambda and

Scorpion4ik [409]

Answer:

$\bf h(x)=max(\lambda,\mu) e^{-max(\lambda,\mu) x}\;(x\geq0)$

Step-by-step explanation:

The PDF of X is

$\bf f(x)=\lambda e^{-\lambda x}\;(x\geq0)$

The PDF of Y is

$\bf g(x)=\mu e^{-\mu x}\;(x\geq0)$

The means of X and Y are respectively,

$\bf \displaystyle\frac{1}{\lambda}\;,\displaystyle\frac{1}{\mu}$

so we can see that the larger the parameter, the smaller the mean. Hence the PDF of Z = min(X, Y) is an exponential with the largest parameter of the two.

Therefore, the PDF of Z is

$\bf h(x)=max(\lambda,\mu) e^{-max(\lambda,\mu) x}\;(x\geq0)$

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2 years ago

9 + 22 = x + 1<br><br> HALPP

rosijanka [135]

Hey!

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Solution:

9 + 22 = x + 1

9 + 22 - x = x + 1 - x

31 - x = 1

31 - x 31 = 31 - 1

x = 30

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Answer:

x = 30

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Hope This Helped! Good Luck!

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3 years ago

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Which expression is equivalent to

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The answer would be A. because two negatives equal a positive

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