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2 years ago

Select the table that represents a linear function. ( graph them if necessary).

Mathematics

2 answers:

zloy xaker [14]2 years ago

7 0

The answer is b, it goes down by the same amount each time in the y values and up by the same amount each time in the x values.

lozanna [386]2 years ago

7 0

Answer:

Step-by-step explanation:

A. both passes through (0,0) and has a constant change. <em>X</em> is going up by 1 every time and <em>Y</em> is going up 3 every time. This makes the graph a straight line

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IrinaK [193]

Answer:

98 cm²

Step-by-step explanation:

Lateral surface area = surface area of the sides ONLY of the object

⇒ lateral SA = B + C + D = 35 + 28 + 35 = 98 cm²

4 0

2 years ago

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In order to estimate the difference between the average hourly wages of employees of two branches of a department store, the fol

Julli [10]

Answer:

$0.071,1.928$

Step-by-step explanation:

Downtown Store North Mall Store

Sample size n 25 20

Sample mean $\bar{x}$ $9 $8

Sample standard deviation s $2 $1

$n_1=25\\n_2=20$

$\bar{x_1}=9\\ \bar{x_2}=8$

$s_1=2\\s_2=1$

$x_1-x_2=9-8=1$

Standard error of difference of means = $\sqrt{\frac{s_1^2}{n_1}+\frac{s_2^2}{n_2}}$

Standard error of difference of means = $\sqrt{\frac{2^2}{25}+\frac{1^2}{20}}$

Standard error of difference of means = $0.458$

Degree of freedom = $\frac{\sqrt{(\frac{s_1^2}{n_1}+\frac{s_2^2}{n_2}})^2}{\frac{(\frac{s_1^2}{n_1})^2}{n_1-1}+\frac{(\frac{s_2^2}{n_2})^2}{n_2-1}}$

Degree of freedom = $\frac{\sqrt{(\frac{2^2}{25}+\frac{1^2}{20}})^2}{\frac{(\frac{2^2}{25})^2}{25-1}+\frac{(\frac{1^2}{20})^2}{20-1}}$

Degree of freedom =36

So, z value at 95% confidence interval and 36 degree of freedom = 2.0280

Confidence interval = $(x_1-x_2)-z \times SE(x_1-x_2),(x_1-x_2)+z \times SE(x_1-x_2)$

Confidence interval = $1-(2.0280)\times 0.458,1+(2.0280)\times 0.458$

Confidence interval = $0.071,1.928$

Hence Option A is true

Confidence interval is $0.071,1.928$

4 0

2 years ago

The number of cable TV systems recently decreased from 16,300 to 16,020. Find the percent decrease.

irga5000 [103]

Percent decrease = (change in value) / (original value)

change in value = 9965-10100 =-135

We will just use 135 because the negative just that the value decreased

original value = 10100

So 135 / 10100 = .0134

This is a decrease of 1.34%

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1 year ago

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zhuklara [117]

Go up six on the y intercept. Then from 6 go up 1 and over 4.

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Write an equation for the line in slope-intercept form.

Tasya [4]

Answer: