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Bogdan [553]
3 years ago
14

Which function is an odd function?

Mathematics
1 answer:
Mrac [35]3 years ago
7 0

Answer:

Algebraically, f is even if and only if f(-x) = f(x) for all x in the domain of f. A function f is odd if the graph of f is symmetric with respect to the origin. Algebraically, f is odd if and only if f(-x) = -f(x) for all x in the domain of f.

Step-by-step explanation:

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The mean number of people per day visiting a museum in July was 140. If 20 more people each day visited the museum in august wha
Dovator [93]

Answer:

80

Step-by-step explanation:

mean = 140+20=160

160/2

= 80

4 0
2 years ago
Sketch the net of the following figure on a sheet of paper and give it to your teacher or describe in words what the net would l
Anna71 [15]

Answer:

the face would be unrolled and the base (circle) would be at the bottom

it would look like:

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3 years ago
Expand and simplify 5(y-2) 2(y-3)
Oksana_A [137]
5y-10 and 2y-6 unless the two are together in which case are they being added or multiplied (the equations).

4 0
3 years ago
What is the equation of the best-fitting regression line? Find this in two ways. First, using the regression analysis part of th
Lemur [1.5K]

Step-by-step explanation:

Regression analysis is used to infer about the relationship between two or more variables.

The line of best fit is a straight line representing the regression equation on a scatter plot. The may pass through either some point or all points or none of the points.

<u>Method 1:</u>

Using regression analysis the line of best fit is: y=\alpha +\beta x+e

Here <em>α </em>= intercept, <em>β</em> = slope and <em>e</em> = error.

The formula to compute the intercept is:

\alpha =\bar y-\beta \bar x

Here<em> </em>\bar y and \bar x are mean of the <em>y</em> and <em>x</em> values respectively.

\bar y=\frac{\sum y_{i}}{n} \\\bar x=\frac{\sum x_{i}}{n}

The formula to compute the slope is:

\beta =\frac{\sum (x-\bar x)(y - \bar y)}{\sum (x=\bar x)^{2}}

And the formula to compute the error is:

e=y-\alpha -\beta x

<u>Method 2:</u>

The regression line can be determined using the descriptive statistics mean, standard deviation and correlation.

The equation of the line of best fit is:

(y-\bar y)=r\frac{\sigma_{x}}{\sigma_{y}} (x-\bar x)

Here <em>r</em> = correlation coefficient = r=\frac{Cov (x,y)}{\sqrt{\sigma^{2}_{x}\sigma^{2}_{y}} }

\sigma_{x} and \sigma_{y} are standard deviation of <em>x</em> and <em>y</em> respectively.

\sigma_{x}=\frac{1}{n}\sum (x-\bar x)^{2} \\\sigma_{y}=\frac{1}{n}\sum (y-\bar y)^{2}

3 0
3 years ago
Dawn has to pay 10,990 for her college dorm room and tuition each year. About how much money does dawn spend the first 2 years o
IceJOKER [234]

Dawn has to pay 10,990 for her college dorm room and tuition each year. About how much money does dawn spend the first 2 years of college

Answer: The amount of money Dawn has to pay for 1 year = 10,990

Therefore, the amount of money Dawn has to pay for first 2 years of college is:

2 \times 10,990 = 21,980


8 0
3 years ago
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