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Fittoniya [83]
3 years ago
13

Which if the following has a cross-sectional base of a circle?

Mathematics
1 answer:
ryzh [129]3 years ago
3 0

Answer:

Step-by-step explanation:

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Half a number plus 2.5 times that number equals 18. What is the number?
Sholpan [36]

Answer:

It's 6.

Step-by-step explanation:

this was so confusing

4 0
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PLEASE HELP WILL MARK YOU BRAINLIEST!!! 50 POINTS’
photoshop1234 [79]

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I can’t answer

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All of the following are equivalent except<br> O 4y<br> O (4)<br> 04.y<br> O 4+ y
barxatty [35]

Answer:

I think it's 4y

Step-by-step explanation:

I think it's 4y is because if y = 0 they all work but 4y which is 0 while all the others are 4

3 0
3 years ago
Which expression is equivalent to<br> 5<br> 8
neonofarm [45]

Answer:

10/16

Step-by-step explanation:

Just multiply the denominator and the numerator by 2 and wha la you get 10/16 hope it helps!

4 0
2 years ago
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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
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