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3 years ago

What is the value of x the equation 1,3,4,6

Mathematics

2 answers:

8090 [49]3 years ago

4 0

The Answer is 4.

You isolate the variable by dividing each side by factors that don't contain the variable.

vekshin13 years ago

4 0

Answer:

C 4

Step-by-step explanation:

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A row of sliced cheese rests on a cutting board. The cheese is labeled $3.15 per pound. An even planner needs to buy 13 pounds o

-Dominant- [34]

Answer:

its the second one

Step-by-step explanation:

5 0

3 years ago

A survey conducted in July 2015 asked a random sample of American adults whether they had ever used online dating (either an onl

Natasha2012 [34]

Answer:

The 99% confidence interval is (0.0787, 0.1613).

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 $1 - \frac{\alpha}{2}$ .

For this problem, we have that:

The survey included 411 adults between the ages of 55 and 64, and 50 of them said that they had used online dating. This means that $n = 411, \pi = \frac{50}{411} = 0.12$

The 99% confidence interval is

So $\alpha = 0.01$ , z is the value of Z that has a pvalue of $1 - \frac{0.01}{2} = 0.995$ , so $Z = 2.575$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{411}} = 0.12 - 2.575\sqrt{\frac{0.12*0.88}{411}} = 0.0787$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{411}} = 0.12 + 2.575\sqrt{\frac{0.12*0.88}{411}} = 0.1613$

The 99% confidence interval is (0.0787, 0.1613).

3 0

4 years ago

What does Sin mean in geometry

Darya [45]

Answer:

in mathematics, the sine is a trigonometric function of an angle.

Step-by-step explanation:

The sine of an acute angle is defined in the context of a right triangle: for the specified angle, it is the ratio of the length of the side that is opposite that angle to the length of the longest side of the triangle (the hypotenuse).

Fixed point: 0

Critical point: kπ + π/2

Inflection point: kπ hope this helps you :)

4 0

4 years ago

Read 2 more answers

Please help to solve this question

irina1246 [14]

Answer:

Step-by-step explanation: