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Lelu [443]
3 years ago
14

HELP ME PLEASE !!!!!!

Mathematics
2 answers:
ipn [44]3 years ago
7 0
The answer to this question is 13.08
koban [17]3 years ago
5 0

Answer:

13.08

Step-by-step explanation:

Step 1: find the sum of all numbers

= 104.65

Step 2: divide by how many values there are

=8

Step 3: solve

104.65 ÷ 8 = 13.08125....

Step 4: round to the hundredths place

= about 13.08

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What is the solution of the equation when solved over the complex numbers?
kumpel [21]

Answer:

x=+i\sqrt{20}\approx+4.472i

x=-i\sqrt{20}\approx-4.472i

Step-by-step explanation:

Starting from x^2+20=0, we do x^2=-20, which means x=\pm\sqrt{-20}, which can be written as x=\pm\sqrt{(-1)(20)}, which gives us x=\pm\sqrt{(-1)}\sqrt{(20)}, which we know is x=\pm i \sqrt{(20)}, so our solutions are:

x=+i\sqrt{(20)}

x=-i\sqrt{(20)}

Which can be approximated to:

x\approx+4.472i

x\approx-4.472i

3 0
3 years ago
Fill in the blank:<br> 1) Area of rectangle is _____________ the area of<br> triangle.
asambeis [7]

Answer:

area or rectangle is double area of triangle

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
The First National Bank of Wilson has 700 checking account customers. A recent sample of 50 of these customers showed 29 have a
attashe74 [19]

The margin of error is 0.137 and the confidence interval for the population proportion is (0.443, 0.717).

<h3>What is the margin of error(MOE)?</h3>

It is defined as an error that provides an estimate of the percentage of errors in real statistical data.

The formula for finding the MOE:

\rm MOE = Z\times \dfrac{s}{\sqrt{n}}

Where   Z is the z-score at the confidence interval

            s is the standard deviation

            n is the number of samples.

We have:

n = 50, X = 29,

Estimate point p = 29/50 = 0.58

q = 1-p = 1-0.58 = 0.42

Z at 0.05/2 (95% confidence interval) = 1.96

\rm MOE = 1.96\sqrt{\dfrac{0.58\times0.42}{50}}

After calculating:

MOE = 0.137

Confidence interval will be: (p - MOE, p+MOE)

= (0.58-0.137, 0.58+0.137)

= (0.443, 0.717)

Thus, the margin of error is 0.137 and the confidence interval for the population proportion is (0.443, 0.717).

Learn more about the Margin of error here:

brainly.com/question/13990500

#SPJ1

3 0
2 years ago
What value correctly fills in the blank so that the expressions are equivalent? 18 + 45 = blank x (2 + 5) 2 3 7 9 pls help
nignag [31]

Answer:

9

Step-by-step explanation:

It is 9 because 9x7=63.

18+45=63

7 0
3 years ago
Read 2 more answers
Arc cd located on circle a has a central angle of 135 the radius is the circle is 24 centimeters what is the length of arc cd
kherson [118]

\textit{arc's length}\\\\ s = \cfrac{\theta \pi r}{180}~~ \begin{cases} r=radius\\ \theta =\stackrel{degrees}{angle}\\[-0.5em] \hrulefill\\ r=24\\ \theta =135 \end{cases}\implies s=\cfrac{(135)\pi (24)}{180}\implies s=18\pi ~cm

3 0
2 years ago
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