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3 years ago

Help for 1,2,3 plz ASAP If correct U get brainiest

Mathematics

1 answer:

nikdorinn [45]3 years ago

5 0

Answer: sorry i only know the answer to the perimeters

1. 24 perimeter

2.85 perimeter

3.99 perimeter for the 3rd question i cant see the bottom number

Explanation:

You just add the numbers together

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Simplify: $\frac{1}{\sqrt{2}+\frac{1}{\sqrt{8}+\sqrt{200}+\frac{1}{\sqrt{18}}}}$.

dmitriy555 [2]

Answer:

Step-by-step explanation:

its no way to answer how u texted it

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2 years ago

What is the area of the figure?

Zinaida [17]

Answer:

The area of the figure is 100

Step-by-step explanation:

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3 years ago

I think i had thw correct answers for thr last two but the keep coming up as incorrect

Oksana_A [137]

Answer:

B. 40

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Step-by-step explanation:

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3 years ago

In 2012, the population of a small town was 3560. The population is decreasing at a rat of 1.7% per year. How can you rewrite an

RSB [31]

In 2012, the population of a small town was 3,560. The population is decreasing at a rate of 1.7% per year. How can you rewrite an exponential growth ...

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3 years ago

A hypothesis test is conducted at the .05 level of significance to test whether or not the population correlation is zero. If th

finlep [7]

Answer:

Th computed value of the test statistic is 3.597

Step-by-step explanation:

The null and the alternative hypothesis is as follows:

Null Hypothesis:

$\mathbf{H_o:}$ the population correlation coefficient is equal to zero

$\mathbf{H_a:}$ the population correlation coefficient is not equal to zero

The test statistics for Pearson correlation coefficient is thus computed as :

$t =\dfrac{r \sqrt{(n-2)}} { \sqrt{(1-(r)^2)} }$

where;

r = correlation coefficient = 0.60

n = sample size = 25

So;

$t =\dfrac{0.60 \sqrt{(25-2)}} { \sqrt{(1-(0.60)^2)} }$

$t =\dfrac{0.60 \sqrt{(23)}} { \sqrt{(1-0.36} }$

$t =\dfrac{0.60 *4.796} {0.8}$

t = 3.597

Comparing to a critical value of t (23 degrees of freedom two-tailed value) = 2.069

Decision Rule:

Since computed value of t is greater than the critical value of t; We reject the null hypothesis and accept the alternative hypothesis.

Conclusion:

We conclude that the population correlation coefficient significantly differs from 0 at 5% (0.05) level of significance.

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4 years ago