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kirill [66]
3 years ago
14

Please help and thank you

Mathematics
2 answers:
telo118 [61]3 years ago
5 0

Answer: The answer is A 405 just take 14% away from 471

masya89 [10]3 years ago
3 0

Answer:

B. 407

Step-by-step explanation:

equation: y= A(1- r/n)^nt

y=471(1-(.07/1))^1(2)

you should get 407.37 as your answer

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Round the number to the nearest thousand. 645,405
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The answer is 645,000

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Nine square tiles are laid out on a table so that they make a solid pattern. perimeters of the fiques that you can be formed?
Anastasy [175]
Let the side of one square be x.
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This will be:
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6 0
3 years ago
Pls get correct for good reward+review
erik [133]

Answer:

1.  D. complex

2. B

3. B

Step-by-step explanation:

I hope this helps :)

4 0
3 years ago
Read 2 more answers
The shortest side of a fight triangle measures20 m. The lengths of the other two sides are censecutive odd integers. Find the le
slamgirl [31]
A² + b² = c²
20² + n² = (n+2)²
400+ n² = (n+2)(n+2)
400 + n²=n² + 2n + 2n +4
400 + n² = n² +4n +4
400 + n²-n² = n²-n² + 4n+4
400 = 4n + 4
400-4 = 4n +4-4
396 = 4n
396/4 = 4n/4
n= 99

20²+ 99² = (99+2)²
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6 0
3 years ago
According to the Census Bureau, 3.39 people reside in the typical American household. A sample of 26 households in Arizona retir
Vikki [24]

Answer:

t=\frac{2.73-3.39}{\frac{1.22}{\sqrt{26}}}=-2.758    

df=n-1=26-1=25  

p_v =P(t_{(25)}  

Since the p value is lower than the significance level 0.1 we have enough evidence to reject the null hypothesis, and we can conclude that the true mean is significanlty lower than 3.39 personas at 10% of significance.

Step-by-step explanation:

Data given and notation  

\bar X=2.73 represent the sample mean

s=1.22 represent the sample standard deviation

n=26 sample size  

\mu_o =3.39 represent the value that we want to test

\alpha=0.1 represent the significance level for the hypothesis test.  

t would represent the statistic (variable of interest)  

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

State the null and alternative hypotheses.  

We need to conduct a hypothesis in order to check if the true mean is less than 3.39 persons, the system of hypothesis would be:  

Null hypothesis:\mu \geq 3.39  

Alternative hypothesis:\mu < 3.39  

The statistic is given by:

t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}  (1)  

Calculate the statistic

We can replace in formula (1) the info given like this:  

t=\frac{2.73-3.39}{\frac{1.22}{\sqrt{26}}}=-2.758    

P-value

The degreed of freedom are given by:

df=n-1=26-1=25  

Since is a one sided lower test the p value would be:  

p_v =P(t_{(25)}  

Conclusion  

Since the p value is lower than the significance level 0.1 we have enough evidence to reject the null hypothesis, and we can conclude that the true mean is significanlty lower than 3.39 personas at 10% of significance.

3 0
3 years ago
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