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4 years ago

Find all the possible rational zeros of f(x)=5x^4 + x^2 - 8

Mathematics

1 answer:

Radda [10]4 years ago

5 0

+-1, +-1/5, +-2, +-2/5, +-4,+-4/5,+-8,+-8/5
Hope that help.

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There are 10 people and each person gets 9 cookies. How many cookies are there total?

lord [1]

Answer:

Step-by-step explanation:

There are 10 people and they each get 9 cookies

And 9 times 10 is 90

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3 years ago

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The number of calls coming per minute into a hotel reservation center is Poisson random variable with mean 3.

natima [27]

Answer:

a) 0.05

b) 0.9826

c) 0.000039308

Step-by-step explanation:

a) $P_X(0) = \frac{e^{-3}3^0}{0!} = e^{-3} = 0.05$

b) For two minutes, the mean is doubled, hence it is 6. In order to calculate the probability of al least two calls arriving, we calculate first the probability of the complementary event: At most 1 call will arrive. For that probability, we need to sum the probabilities of 0 and 1.

$P_X(0) = e^{-6}$

$P_X(1) = \frac{e^{-6}*6^1}{1!} = 6*e^{-6}$

Hence,

$P(X \geq 2) = 1-P(X < 2) = 1- 7*e^{-6} = 0.9826$

c) For five minutes the mean is 15. We need to sum the probabilities of 0, 1 and 2.

$P_X(0) = e^{-15}$

$P_X(1) = e^{15}*15$

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As a result,

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3 years ago

Please help! Identify the rule! Will give brainiest!!

pychu [463]

Answer:

y = 3x -1

Step-by-step explanation:

When x goes up 2 units from 5 to 7, y goes up 6 units, from 14 to 20. That's 3 times as many units as the change in x.

When x goes up 4 units from 7 to 11, you goes up 12 units, from 30 to 32. That's 3 times as many units as the change in x.

So, the slope of the function is constant at 3. If y were 3x exactly, the output numbers would be 15, 21, 33, each of which is 1 higher than the actual output. Hence the output must be one less than 3x, or ...

y = 3x -1

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3 years ago

Please answer i need help

White raven [17]

Answer:

5-3í

Step-by-step explanation:

Because the root of nine is three, equaling 5-3í

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Degger [83]

Answer:

Hola!! here is a tutor website that can help you answer some questions for any subject:

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