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Evgesh-ka [11]
1 year ago
10

Describe the transformations of f(x) when compared to the parent function. f(x)=(x+7) a) horizontal shift left 7 units b) horizo

ntal shift right 7 units c) vertical shift up 7 units d) vertical shift down 7 units
Mathematics
1 answer:
Nikolay [14]1 year ago
3 0

We have the function:

f(x)=x+7

The parent function is the linear parent function p(x)=x.

We can see that f(x) is 7 units above p(x) for any value of p(x), so we can transform p(x) to f(x) by a translation of 7 units in the y-axis.

We can see this in the graph:

Then, the transformation is a vertical shift up 7 units.

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Vedmedyk [2.9K]

Answer:

C) Multiply the previous number of dots by 2.

Please mark me as brainliest:)

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2 years ago
Tain has a great literary tradition that spans centuries. One might assume, then, that Britons read more than citizens of other
tresset_1 [31]

Answer:

Null hypothesis:p_{1} \leq p_{2}  

Alternative hypothesis:p_{1} > p_{2}  

z=3.02  

p_v =P(Z>3.02)=0.00127  

The p value is a very low value and using any significance level for example \alpha=0.05, 0,1,0.15 always p_v so we can conclude that we have enough evidence to reject the null hypothesis, and we can say the the proportion of Canadians is not significantly higher than the porportions of readers at Britons.  

Step-by-step explanation:

1) Data given and notation  

X_{1}=0.86*1004 represent the number of Canadians randomly sampled by Gallup that read at least one book in the past year

X_{2}=0.81*1009 represent the number of Britons randomly sampled that read at least one book in the past year

n_{1}=1004 sample of Gallup selected

n_{2}=1009 sample of Britons selected

p_{1}=0.86 represent the proportion of Canadians randomly sampled by Gallup that read at least one book in the past year

p_{2}=0.81 represent the proportion of Britons randomly sampled that read at least one book in the past year

z would represent the statistic (variable of interest)  

p_v represent the value for the test (variable of interest)

2) Concepts and formulas to use  

We need to conduct a hypothesis in order to check if the proportion for men with red/green color blindness is a higher than the rate for women  , the system of hypothesis would be:  

Null hypothesis:p_{1} \leq p_{2}  

Alternative hypothesis:p_{1} > p_{2}  

We need to apply a z test to compare proportions, and the statistic is given by:  

z=\frac{p_{1}-p_{2}}{\sqrt{\hat p (1-\hat p)(\frac{1}{n_{1}}+\frac{1}{n_{2}})}}   (1)

Where \hat p=\frac{X_{1}+X_{2}}{n_{1}+n_{2}}=\frac{0.81+0.86}{2}=0.835

3) Calculate the statistic

Replacing in formula (1) the values obtained we got this:  

z=\frac{0.86-0.81}{\sqrt{0.835(1-0.835)(\frac{1}{1004}+\frac{1}{1009})}}=3.02  

4) Statistical decision

For this case we don't have a significance level provided \alpha, but we can calculate the p value for this test.  

Since is a one side test the p value would be:  

p_v =P(Z>3.02)=0.00127  

So the p value is a very low value and using any significance level for example \alpha=0.05, 0,1,0.15 always p_v so we can conclude that we have enough evidence to reject the null hypothesis, and we can say the the proportion of Canadians is not significantly higher than the porportions of readers at Britons.  

5 0
3 years ago
BRAINLIEST <br>if -x = x -6 then x = <br>A. -6<br>B. -3<br>C. 0<br>D. 3<br>explain please​
Paul [167]

Answer:

D or 3

Step-by-step explanation:

The equation you are saying is

-x = x-6

If you move both x's to one side, you get

-2x = -6

From this, you can simplify by dividing by -2

x=3, or D.

Hope this helped!

5 0
3 years ago
Find the domain and range for the function graphed below ​
Nana76 [90]

Answer:

Domain: 3, 2, 1, 0, -1 , -2 , -3

Range: 5 , 4 , 3 , 2 , 1 , 0 , -1 , -2

Step-by-step explanation:

The domain values are all of the x-values, and the range value are all of the y-values. Domain ad range can also be know as input and output.

3 0
3 years ago
Find x<br><br>please help!!​
riadik2000 [5.3K]

Answer:  9\sqrt{3}

==========================================================

Explanation:

For any 30-60-90 triangle, the short leg is always half the hypotenuse.

This makes the short leg to be 18/2 = 9 units long.

We then multiply this by \sqrt{3} to get the length of the long leg.

\text{long leg} = (\text{short leg})*\sqrt{3}\\\text{long leg} =9\sqrt{3}

Or you could use the pythagorean theorem to solve x^2+9^2 = 18^2 and you should get x = \sqrt{243} = 9\sqrt{3}

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3 years ago
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