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3 years ago

Will mark brainliest!!!Using sin in math solve the one circled in green

Mathematics

1 answer:

Tresset [83]3 years ago

8 0

Answer:

x ≈ 32.3

Step-by-step explanation:

Using the sine ratio in the right triangle

sin48° = $\frac{opposite}{hypotenuse}$ = $\frac{24}{x}$ ( multiply both sides by x )

x × sin48° = 24 ( divide both sides by sin48° )

x = $\frac{24}{sin48}$ ≈ 32.3 ( to 1 dec. place )

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In a simple regression analysis for a given data set, if the null hypothesis β = 0 is rejected, then the null hypothesis ρ = 0 i

kati45 [8]

Answer:

Null hypothesis: $\rho =0$

Alternative hypothesis: $\rho \neq 0$

The statistic to check the hypothesis is given by:

$t=\frac{r \sqrt{n-2}}{\sqrt{1-r^2}}$

And is distributed with n-2 degrees of freedom

And the statistic to check the significance of a coeffcient in a regression is given by:

$t_1 = \frac{\hat{\beta_1} -0}{S.E (\hat{\beta_1})}$

For this case is importantto remember that t1 and p value for test of slope coefficient is the same test statistic and p value for the correlation test so then the answer would be:

Always

Step-by-step explanation:

In order to test the hypothesis if the correlation coefficient it's significant we have the following hypothesis:

Null hypothesis: $\rho =0$

Alternative hypothesis: $\rho \neq 0$

The statistic to check the hypothesis is given by:

$t=\frac{r \sqrt{n-2}}{\sqrt{1-r^2}}$

And is distributed with n-2 degrees of freedom

And the statistic to check the significance of a coeffcient in a regression is given by:

$t_1 = \frac{\hat{\beta_1} -0}{S.E (\hat{\beta_1})}$

For this case is importantto remember that t1 and p value for test of slope coefficient is the same test statistic and p value for the correlation test so then the answer would be:

Always

4 0

3 years ago

Can somebody please help me out ?

Sever21 [200]

Answer:

Step-by-step explanation:

238,900/7,917=30.1755

7 0

3 years ago

Read 2 more answers

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horrorfan [7]

do you sell genius brain

7 0

2 years ago

Slove 6/p = 36/54? <br> A. 12<br> B.9 <br> C. 4 <br> D. 8

timurjin [86]

Cross-multiplication:
$36p = 54(6)$
$36p = 324$
$p = 9$
The answer is B.

5 0

4 years ago

Jason purchased 12 shirts for the members of a school club. Each shirt cost $5.50. Jason

Alex Ar [27]

Answer:

52 dollars and 47 cents, or 52.47

Step-by-step explanation:

First, multiply 12 and 5.50, then you should get 66.00. Then, take the 25% discount, and divide it by a hundred, you should get 0.25, now multiply 0.25 and 66.00. You should get 16.50, thats your discount, so subtract 16.50 from 66.00, you should get 49.50. Now for the sales tax, divide 6.0 by 100, you should get 0.06. Now multiply 0.06 and 49.50, you should get 2.97, thats your tax, add it to 49.50, and you get 52.47 so BOOM, thats your answer, your welcome

5 0

3 years ago