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3 years ago

The value of [-10] is? A.11 B.-10 C.-9

Mathematics

1 answer:

Tresset [83]3 years ago

3 0

Answer:

B = -10

Step-by-step explanation:

the answer is B = - 10

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The volume of a rectangular prism is represented by the function x

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Answer:

x = 4

Step-by-step explanation:

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2 years ago

For which nonnegative value of x is the expression 5+x/25-x^2

erica [24]

Answer:

Step-by-step explanation:

$\frac{5+x}{25-x^2} >0\\=\frac{5+x}{(5+x)(5-x)} \\=\frac{1}{5-x} >0\\if~5-x>0\\or~5>x\\or x$

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3 years ago

Consider a binomial distribution of 200 trials with expected value 80 and standard deviation of about 6.9. Use the criterion tha

mote1985 [20]

Answer:

The correct answer is option 'a' : 120 is more than 2.5 standard deviations above the expected value.

Step-by-step explanation:

For an exponential distribution we have

The expected value μ = 80

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The deviation is related to expected value and probability as

$\sigma =\sqrt{np(1-p)}\\\\\therefore \sigma =\sqrt{200\cdot 0.4\cdot (1-0.4)}=6.9$

Thus the values between the given deviation is

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Now since 120 successes are out of the range of [62.75,97.25] thus 120 is more than the expected value.

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3 years ago

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blagie [28]

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2 years ago

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Step-by-step explanation:

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