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2 years ago

What is the function rule represented by the following table?

Mathematics

1 answer:

sergij07 [2.7K]2 years ago

6 0

The answer is Y= -2x+1

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Simplify and Show all of your work please!

Fudgin [204]

Answer:

$\Huge \boxed{\mathrm{9}}$

Step-by-step explanation:

$\Rightarrow \displaystyle \frac{18 \div 2 * 3}{5-2}$

Dividing first.

$\Rightarrow \displaystyle \frac{9 * 3}{5-2}$

Multiplying and subtracting.

$\Rightarrow \displaystyle \frac{27}{3}$

Division.

$\Rightarrow 9$

7 0

3 years ago

Give a 98% confidence interval for one population mean, given asample of 28 data points with sample mean 30.0 and sample standar

klio [65]

We have a sample of 28 data points. The sample mean is 30.0 and the sample standard deviation is 2.40. The confidence level required is 98%. Then, we calculate α by:

$\begin{gathered} 1-\alpha=0.98 \\ \alpha=0.02 \end{gathered}$

The confidence interval for the population mean, given the sample mean μ and the sample standard deviation σ, can be calculated as:

$CI(\mu)=\lbrack x-Z_{1-\frac{\alpha}{2}}\cdot\frac{\sigma}{\sqrt[]{n}},x+Z_{1-\frac{\alpha}{2}}\cdot\frac{\sigma}{\sqrt[]{n}}\rbrack$

Where n is the sample size, and Z is the z-score for 1 - α/2. Using the known values:

$CI(\mu)=\lbrack30.0-Z_{0.99}\cdot\frac{2.40}{\sqrt[]{28}},30.0+Z_{0.99}\cdot\frac{2.40}{\sqrt[]{28}}\rbrack$

Where (from tables):

$Z_{0.99}=2.33$

Finally, the interval at 98% confidence level is:

$CI(\mu)=\lbrack28.94,31.06\rbrack$

4 0

10 months ago

Is there a way to understand inequalities better? I don't get them at all!

AlekseyPX

Ok for inequalities it's this < and > that so here's a example prob 3>2 so as my teacher used it put it "it's like the little number eats the bigger number." For negatives the one that's being eaten would be the one that's the closest to 0 so -3>-5 also alone way of doing this is to make a number line that's another way I was taught how to do these. I hope this helps you!

7 0

3 years ago

What are the elements in this set? D={16,19,21} , E={16,18,19,20}

dimaraw [331]

D = {16, 19, 21}
E = {16, 18, 19, 20}
D ∩ E = {16, 19}

5 0

3 years ago

On a map of South Asia, Nepal looks approximately like a rectangle

Hoochie [10]

Answer:

VK for up ureueusidifdisodaaiwiwu

6 0

3 years ago