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EastWind [94]
3 years ago
9

Simplify: 5 - i8 + 2i32

Mathematics
1 answer:
cricket20 [7]3 years ago
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
16x = 16
x = 16/16
x = 1
8 0
3 years ago
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An economist is interested in studying the spending habits of consumers in a particular region. The population standard deviatio
Lena [83]

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 = 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

          w = \$ 729.7

5 0
2 years ago
What is a “balance brought forward?” a. The amount of money you transfer from another checking account b. The amount of money yo
sp2606 [1]
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 p<span>revious </span>balance<span> on an account which is carried over to the next billing period. Hope this answers the question.</span>
8 0
3 years ago
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Pachacha [2.7K]

Answer:

This is what came up when I googled it... Sry

Step-by-step explanation:

e^{\ln x}=x

\ln = natural logarithm

e = natural exponent

x = real number

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3 years ago
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True or False: The following sequence of numbers is an arithmetic sequence.
slava [35]

Answer:

False

Step-by-step explanation:

3 0
3 years ago
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