2 years ago

R^2 -9tw +3wr -3tr =

1 answer:

Tju [1.3M]2 years ago

6 0

The answer would be....(r + 3w) × ( r - 3t)

You might be interested in

devlian [24]

Umm. Is this high school?.
4 friends x 2 ballons = 8 friends only ballons.
8 + 1 = 9.
9 total

4 0

3 years ago

sweet-ann [11.9K]

Answer to this math equation: 46744733

5 0

2 years ago

Oliga [24]

The correct answer is 15.75

5 0

3 years ago

Lilit [14]

Answer: 0.32

Step-by-step explanation:

3 0

2 years ago

AlekseyPX

Answer:

The margin of error for a 99% confidence interval for the population mean is 1.8025.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.99}{2} = 0.005$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.005 = 0.995$ , so $z = 2.575$

Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

In this problem:

$\sigma = 5.6$

$M = 2.575*\frac{5.6}{\sqrt{64}} = 1.8025$

The margin of error for a 99% confidence interval for the population mean is 1.8025.

5 0

2 years ago