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4 years ago

Evaluate x 3 for x = 2.

Mathematics

1 answer:

solong [7]4 years ago

6 0

If you mean 3x then that would be 6

hope this helps you

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Five Identical semicircles are arranged as shown.<br> Find the diameter of one circle

Arte-miy333 [17]

The diameter of one circle is 28 units

Find the diagram shown below:

Considering the semi-circle at the centre.

Let the unknown distance from the left be x:
Let the unknown distance from the right be y:

To get the value of "x"

x + 16 = 22

x = 22 - 16

x = 6

To get the value of "x"

16 +y = 22

y = 22 - 16

y = 6

Diameter of one of the circle = x + 16 + y

Diameter of one of the circle = 6 + 16 + 6

Diameter of one of the circle = 28

Hence the diameter of one circle is 28 units

Learn more on diameter of circle: brainly.com/question/23220731

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3 years ago

What is x-10=12 find x

Luba_88 [7]

Answer:

X is 22

Step-by-step explanation:

7 0

3 years ago

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Which function has an inverse function?

Sergeu [11.5K]

F(x)=x^5-3 is the answere

8 0

3 years ago

Plz answer this ASAP! What is the x-coordinate of the solution for the system of equations? {y−x=910+2x=−2y Enter your answer in

garri49 [273]

:) Here is your answer -7

5 0

3 years ago

A simple random sample (SRS) of 150 is taken from a population with a 0.6 proportion of success. An independent SRS of 250 is ta

Virty [35]

Answer:

$SE_{\hat p_1 -\hat p_2}= \sqrt{\frac{0.6(1-0.6)}{150}+\frac{0.3(1-0.3)}{250}}= 0.0494$

Step-by-step explanation:

For this case we have the following data:

$n_1 =150$ represent the random sample 1 selected

$\hat p_1 =0.6$ represent the proportion of success for the sample 1 selected

$n_2 =250$ represent the random sample 2 selected

$\hat p_2 =0.3$ represent the proportion of success for the sample 2 selected

We know for this case that we can use the normal approximation since for both cases we have:

$n_1 p_1 =90 \geq 10, n_1 (1-p_1)=60 \geq 10$

$n_2 p_2 =75 \geq 10, n_2 (1-p_2)=175 \geq 10$

We have the randomization condition and we assume that the two samples are <10% of the entire population size.

So then we can use the following distribution for the proportions:

$p \sim N( \hat p, \sqrt{\frac{\hat p (1-\hat p)}{n}})$

For this case we want to find the distribution for the difference of these two proportions and we have this:

$p_1 -p_2 \sim N (\hat p_1 -\hat p_2 , \sqrt{\frac{\hat p_1 (1-\hat p_1)}{n_1} +\frac{\hat p_2 (1-\hat p_2)}{n_2}})$

So then the dtandard deviation would be given by:

$SE_{\hat p_1 -\hat p_2}= \sqrt{\frac{0.6(1-0.6)}{150}+\frac{0.3(1-0.3)}{250}}= 0.0494$

4 0

4 years ago

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