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maxonik [38]
2 years ago
9

PLEASE HELP WITH THIS PLEASE.

Mathematics
1 answer:
Artist 52 [7]2 years ago
7 0

Answer:

1, 7

Step-by-step explanation:

(3+i)(1+2i)

=3+6i+i+2i^2

=3+7i+2i^2

=1+7i

a = 1

b = 7

i^2=-1

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A study found that a 95% confidence interval for the mean μ of a particular population was computed from a random sample of 1200
kotykmax [81]

Answer:

95% confidence interval for the mean μ is (6,14)

The Population mean μ lies between ( 6, 14 )

Step-by-step explanation:

<u><em>Explanation</em></u>:-

Given random sample 'n' = 1200

95% confidence interval for the mean μ is determined by

        (x^{-} -Z_{\alpha } \frac{S.D}{\sqrt{n} } , x^{-} +Z_{\alpha } \frac{S.D}{\sqrt{n} } )

Level of significance = 95% 0r 0.05

Z₀.₀₅ = 1.96

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Mean of the small sample = 10

95% of confidence intervals are

                         ( 10 ±4 )

                  ( 10 -4 , 10+4)

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95% confidence interval for the mean μ lies between ( 6, 14 )

8 0
2 years ago
Calculate<br> 2.43 x 4 = <br> (full working required
antiseptic1488 [7]

Answer: 9.72

To make it easier you first remove( imagine)there is no decimal point. Then u multiply the number which is 4 through all the digits to get 972.

But u are not done yet because u have forgotten the decimal point. To know where to put the decimal point u have to count the number of places it was in order to know where to place it.

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5 0
2 years ago
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dedylja [7]

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To convert distance between the second and third bases from feet to yard ;

Multiply distance in feets by 0.3333 to obtain the corresponding distance in yards ;

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3 0
3 years ago
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vovangra [49]

Answer:

Posts: 34

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3 0
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