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3 years ago

Simplify: 5 - i8 + 2i32

1 answer:

5 0

So when writing non-real numbers you must put it into a+bi format where a is the real part and bi is the non-real part so
if we assume that 2i32=2*32i=64i
then the closed phrase is
5-8i+64i
or
5+56i

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blagie [28]

16x = 45 - 29
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An economist is interested in studying the spending habits of consumers in a particular region. The population standard deviatio

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Answer:

The width is $w = \$ 729.7$

Step-by-step explanation:

From the question we are told that

The population standard deviation is $\sigma = \% 1,000$

The sample size is $n = 50$

The sample mean is $\= x = \$ 15,000$

Given that the confidence level is 99% then the level of significance is mathematically represented as

$\alpha = 100 - 99$

=> $\alpha = 1\%$

=> $\alpha = 0.01$

Next we obtain the critical value of $\frac{\alpha }{2}$ from the normal distribution table, the value is

$Z_{\frac{\alpha }{2} } = Z_{\frac{0.01 }{2} } = 2.58$

Generally margin of error is mathematically represented as

$E = Z_{\frac{\alpha }{2} * \frac{\sigma }{\sqrt{n} }$

substituting values

$E = 2.58 * \frac{1000 }{\sqrt{50} }$

$E = 364.9$

The width of the 99% confidence interval is mathematically evaluated as

$w = 2 * E$

substituting values

$w = 2 * 364.9$

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2 years ago

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I believe the correct answer from the choices listed above is option C. A balance brought forward would be the amount of money you have from the previous statement period. It is the previous balance on an account which is carried over to the next billing period. Hope this answers the question.

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Answer:

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Step-by-step explanation:

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e = natural exponent

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True or False: The following sequence of numbers is an arithmetic sequence.

slava [35]

Answer:

False

Step-by-step explanation:

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