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3 years ago

Question 1

Mathematics

1 answer:

8_murik_8 [283]3 years ago

8 0

Answer:

y = 3x

Step-by-step explanation:

because 24/8 is 3

sorry if im wrong..

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Write the expression in standard form <img src="https://tex.z-dn.net/?f=%5Cfrac%7B7%7D%7B3-15i%7D" id="TexFormula1" title="\

valentina_108 [34]

Answer:

7/78 - 35/78i

Step-by-step explanation:

A complex number is a real number, an imaginary number or a number with both real and imaginary number. Its standard form is:

a + bi

For the expression, 7/ 3-15i 

(7/ 3-15i) (3+15i)

21 - 105i / (234)

7/78 - 35/78i

4 0

3 years ago

(r/s)(3) = ? please help.

MissTica

Answer:

$\frac{3r}{s}$

4 0

3 years ago

Just number nine please

nlexa [21]

My dude its 9 brubh ni99a isis

4 0

3 years ago

Researchers ask a random sample of 1,001 adults nationwide whether they favor or oppose the legalization of marijuana. Fifty-fiv

natima [27]

Answer:

b. It will decrease by a factor of 2

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 interval $1-\alpha$ , we have the following confidence interval of proportions.

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

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

The lower end of the interval is given by:

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

The upper end of the interval is given by:

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

The length of the interval is the subtraction of the upper end by the lower end, so it is:

$L = 2z\sqrt{\frac{\pi(1-\pi)}{n}}$

This means that the length is inverse proportional to the square root of the size of the sample.

So, if the sample size is multiplied by 4, the length of the interval is going to decrease by a factor of 2.

4 0

3 years ago

What is the y intercept of the line -4x + 6y = -12?

snow_lady [41]

-4x + 6y = -12
-4(0) + 6y = -12
 0 + 6y = 12
 6y = 12
 6 6
 y = 2

The y-intercept of the equation is 2.

6 0

3 years ago