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3 years ago

How do i find the distance between the pair of points. (9,3) , (9,7)

1 answer:

5 0

Answer: 4

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To get this answer, subtract the y coordinates.
7-3 = 4
You subtract the larger one minus the smaller one. You can use absolute value to ensure the result is never negative.

This trick only works because the x coordinates are the same (both are 9)

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Find the greatest common factor of these three expressions. 5v2 , 14v4 , and 35

a_sh-v [17]

Question

Find the greatest common factor of these three expressions. 5v2 , 14v4 , and 35

Answer:

Step-by-step explanation:

assuming that 5v2 is 5², and 14v4 is 14^4

5² = 25

14^4 = 38416

35 = 35

The factors of 25 are: 1, 5, 25

The factors of 35 are: 1, 5, 7, 35

The factors of 38416 are: 1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 343, 392, 686, 784, 1372, 2401, 2744, 4802, 5488, 9604, 19208, 38416

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the greatest common factor is 1

6 0

3 years ago

In a clinical test with 2161 subjects, 1214 showed improvement from the treatment. Find the margin of error for the 95% confiden

Vlad [161]

Answer:

The margin of error for the 95% confidence interval used to estimate the population proportion is of 0.0209.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the z-score that has a p-value of $1 - \frac{\alpha}{2}$ .

The margin of error is of:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

In a clinical test with 2161 subjects, 1214 showed improvement from the treatment.

This means that $n = 2161, \pi = \frac{1214}{2161} = 0.5618$

95% confidence level

So $\alpha = 0.05$ , z is the value of Z that has a p-value of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

Margin of error:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$M = 1.96\sqrt{\frac{0.5618*0.4382}{2161}}$

$M = 0.0209$

The margin of error for the 95% confidence interval used to estimate the population proportion is of 0.0209.

4 0

3 years ago

Please answer ASAP!

Scorpion4ik [409]

Multiply the two brackets together

(2x-1)(x-2)

2x(x)(2x*-2)(-1*x)(-1*-2)

2x^2-4x-x+2

2x^2-5x+2

Answer is 2x^2-5x+2 - J

8 0

3 years ago

Which expression gives the distance between the points (5, 1) and (9, -6)?

Vesna [10]

So the distance formula: d = rad (x2 - x1)^2 + (y2 - y1)^2
it doesn't matter what order you do, you just have to make sure it's a y coordinate for y and an x coordinate for x.
rad (9-5)^2 + ((-6)-1)^2
rad 4^2 + (-7)^2
rad 16 + 49
rad 65

4 0

3 years ago

Read 2 more answers

Choose one of 5 kinds of juice and one of 3glass sizes

IRISSAK [1]

Orange juice and large?!??¿¿

3 0

3 years ago