All categories

3 years ago

Find the value of the variable

Mathematics

1 answer:

FrozenT [24]3 years ago

7 0

Answer:

z: 19

Step-by-step explanation:

You might be interested in

??????????????????????????????????????????????????

AnnyKZ [126]

Answer:

what's the question ndndn

6 0

3 years ago

Read 2 more answers

Which is the expression 4 x 4 x4 x 3 x 3 x 2 x 2 x 2 x 2 written using<br> exponents?

algol [13]

4^3 x 3^2 x 2^4 is that answer to the question

6 0

3 years ago

Glenda paid $23 for 6 books.What is the rate that Glenda paid for each book?

Gnoma [55]

Answer:

$ $3.83$

Step-by-step explanation:

$23$ divided by $6=3.83333333333.....$

We round to nearest cent. $3.83$

6 0

3 years ago

Assume that a sample is used to estimate a population proportion p. Find the margin of error E that corresponds to the given sta

seropon [69]

Answer:

The margin of error is of 0.0184 = 1.84%.

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

The margin of error is:

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

95% confidence level

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

In this question:

$\pi = \frac{1672}{2388} = 0.7, n = 2388$

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

$M = 1.96\sqrt{\frac{0.7*0.3}{2388}}$

$M = 0.0184$

The margin of error is of 0.0184 = 1.84%.

6 0

3 years ago

When do I use elimination and when do I use substitution?

lana [24]

Elimination is used when there is a common factor between the two equations. Substitution is used in cases where finding a common term just isn’t possible, or too complicated.

6 0

3 years ago