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3 years ago

Will give brainliest and thanks

Mathematics

1 answer:

Maru [420]3 years ago

6 0

Answer:

y = -3x - 3

Step-by-step explanation:

First, determine the slope of the red line. As we move from (0, 3) to (1, 0),

x increases by 1 and y decreases by 3. Hence, the slope, m, is

m = rise / run = -3 / 1, or m = -3.

The desired new line, parallel to the red line, has the same slope as the red line: m = -3.

The equation for this new line is y - k = m (x - h), where (h, k): (-1, 0):

We get y - 0 = -3 (x + 1), or y = -3x - 3.

Check: Does this line go thru the given point (-1, 0)?

Is 0 = -3(-1) - 3 true? Yes, it is true.

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What is 12/28 equivalent from ratios

Jobisdone [24]

Thx from the website http://goodcalculators.com/ratio-calculator/

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3 years ago

According to a recent census, 14.6% of all housing units in a certain country are vacant. A county supervisor wonders if her c

WITCHER [35]

Answer:

We need to conduct a hypothesis in order to test the claim that the true proportion is equal to 14.6% or not. So we need to use a one proportion z test and the system of hypothesis are:

Null hypothesis: $p=0.146$

Alternative hypothesis: $p \neq 0.146$

A. One-proportion z-test

When we conduct a proportion test we need to use the z statisitc, and the is given by:

$z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}$ (1)

And the conditions required are:

1) The data comes from a random sampling

2) Independence condition between observations

3) np>10 and n(1-p)>10

4) The sample size is 10 times lower than the population size.

Step-by-step explanation:

Data given and notation

n=865 represent the random sample taken

X=159 represent the housing units that are vacant

$\hat p=\frac{159}{865}=0.184$ estimated proportion of vacant units

$p_o=0.146$ is the value that we want to test

$\alpha$ represent the significance level

z would represent the statistic (variable of interest)

$p_v$ represent the p value (variable of interest)

Solution to the problem

We need to conduct a hypothesis in order to test the claim that the true proportion is equal to 14.6% or not. So we need to use a one proportion z test and the system of hypothesis are:

Null hypothesis: $p=0.146$

Alternative hypothesis: $p \neq 0.146$

A. One-proportion z-test

When we conduct a proportion test we need to use the z statisitc, and the is given by:

$z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}$ (1)

And the conditions required are:

1) The data comes from a random sampling

2) Independence condition between observations

3) np>10 and n(1-p)>10

4) The sample size is 10 times lower than the population size.

5 0

3 years ago

Need help solving for X

lys-0071 [83]

There's 180 degrees in a triangle so and the two angles and then subtract by 180

6 0

3 years ago

Read 2 more answers

What is the answer, and how do I solve that equation in order to get my answer? I really want to get the hang of this.

Mrrafil [7]

Answer:

-x^2+4x+6

Step-by-step explanation:

f(x) = 4x+1

g(x) = x^2 - 5

(f-g) (x) = 4x+1 - ( x^2 - 5)

Distribute the minus sign

= 4x+1 - x^2 +5

Combine like terms

= -x^2+4x+6

6 0

3 years ago

How does this happen? please explain

baherus [9]

Well, basically what they are trying to do is isolate the y variable on the left side of the equation in order to get it in slope-intercept form (y=mx+b where "m" equals the slope and "b" is the y-intercept). So, in order to do this they have to do the inverse operations (so if it's adding they subtract, and if it's multiplying they divide.) Anyways, they do this with the intention of getting only the variable "y" on the left side of the equal sign. Once they did all that they got it in slope intercept form, and they know that the coefficient in front of the variable x is the slope.

6 0

4 years ago