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3 years ago

What’s another way to write 6+6+6+6?

Mathematics

2 answers:

vredina [299]3 years ago

4 0

6 times 4
3+3+3+3+3+3+3+3

Alona [7]3 years ago

4 0

You can write 6+6+6+6 as 6 multiplied by 4.

It is equal to 24 so you can also write it as any expression that is equal to 24

For example,

3*8 = 24

so...

3*8 = 6+6+6+6

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7a-4b=2b-5a solve for a

uysha [10]

Step-by-step explanation:

7a - 4b = 2b - 5a

7a + 5a = 2b + 4b

12a = 6b

a = 6b/12

a = b/2

5 0

3 years ago

Solve showing all work, simplify completely: 6/12 + 1/3

Gelneren [198K]

10/12 = 5/6 is your answer

5 0

3 years ago

You wish to compute the 99% confidence interval for the population proportion. How large a sample should you draw to ensure that

Nataly_w [17]

Answer:

$n=\frac{0.5(1-0.5)}{(\frac{0.13}{2.58})^2}=98.47$

And rounded up we have that n=99

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

Solution to the problem

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 99% of confidence, our significance level would be given by $\alpha=1-0.99=0.01$ and $\alpha/2 =0.005$ . And the critical value would be given by:

$z_{\alpha/2}=-2.58, t_{1-\alpha/2}=2.58$

The margin of error for the proportion interval is given by this formula:

$ME=z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}$ (a)

And on this case we have that $ME =\pm 0.13$ and we are interested in order to find the value of n, if we solve n from equation (a) we got:

$n=\frac{\hat p (1-\hat p)}{(\frac{ME}{z})^2}$ (b)

We assume the value for $\hat p =0.5$ since we don't have previous info. And replacing into equation (b) the values from part a we got:

$n=\frac{0.5(1-0.5)}{(\frac{0.13}{2.58})^2}=98.47$

And rounded up we have that n=99

4 0

3 years ago

Read 2 more answers

I need help :( If you are not sure please say so because if I get it wrong it sets me back about an hour. I am also throwing 40

nikklg [1K]

The cosine of an angle in an isosceles right triangle is always √(2) / 2.

8 0

3 years ago

Which equation represents the following word sentence? Five more than three times x is twenty. 5x + 3 = 20 3x + 5 +20 3(x + 5) =

vitfil [10]

So five plus three times x equals twenty because five is alone and you’re adding three times x and is represents the equal sign and twenty is alone. So the equation is this 5 + 3x = 20

6 0

3 years ago