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3 years ago

What does pythagorean theorem state?

2 answers:

8 0

The pythagorean theorem states that if a triangle is a right triangle, then the sum of the squares of the legs of the triangle is equal to the square of the hypotenuse. The formula is a² + b² = c².

Harrizon [31]3 years ago

7 0

It's a statement about triangles containing a right angle.

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A company maintains a large fleet of automobiles. To check the average number of miles driven per month, a random sample of 100

Bas_tet [7]

Answer:

$df=n-1=100-1=99$

Since is a two sided test the p value would be:

$p_v =2*P(t_{(99)}>2.7)=0.0082$

And since the p vaue is lower than the significance level we have enough evidence to reject the null hypothesis.

Step-by-step explanation:

Data given

$\bar X=2690$ represent the sample mean

$s=360$ represent the sample standard deviation

$n=100$ sample size

$\mu_o =2600$ represent the value that we want to test

$\alpha=0.05$ 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)

System of hypothesis

We need to conduct a hypothesis in order to check if the true mean of interest is different from 2600, the system of hypothesis would be:

Null hypothesis: $\mu = 2600$

Alternative hypothesis: $\mu \neq 2600$

The statistic is given by:

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

Calculate the statistic

The statistic for this case is given $t_{calc}=2.7$

P-value

The first step is calculate the degrees of freedom, on this case:

$df=n-1=100-1=99$

Since is a two sided test the p value would be:

$p_v =2*P(t_{(99)}>2.7)=0.0082$

And since the p vaue is lower than the significance level we have enough evidence to reject the null hypothesis.

7 0

3 years ago

Help me due tomorrow at 4

Korolek [52]

4 for the first one and 1.5 for the second one

5 0

3 years ago

Let cos(−θ)=−3/5 and tanθ>0 .

german

Answer:

Step-by-step explanation:

The cosine of a right triangle is the adjacent over the hypotenuse. If the cosine is -3/5 then it must be a right triangle with sides 3, 4, & 5 since this is a Pythagorean triple. This means the sin will be -4/5. We know its negative because the tangent is positive so this is the 3rd quadrant where both Sine and Cosine are negative.

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4 years ago

I would like to know how to solve year problems

pshichka [43]

You need to get the Variables alone

3 0

3 years ago

Pls help due ASAP <br> Show workings pls

kobusy [5.1K]

The answer is c
you (4,4) and another point need to be double (2,-5) so the other point needs to add to (4,-10) so 4 + 0 is 4 and 4 + - 14 = 10

4 0

3 years ago