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3 years ago

14

The degree of 4x^5y^mz is 10 what is the value of m

1 answer:

Tcecarenko [31]3 years ago

6 0

The answer is 4. I hope this has helped.

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Write an expression that represents the value, in cents, if n nickels.

Mademuasel [1]

1, 10, 25, 50, and so on...

8 0

3 years ago

Assume that population mean is to be estimated from the sample described. Use the sample results to approximate the margin of er

Vikentia [17]

Answer:

$ME=1.998 \frac{4}{\sqrt{64}}=0.999 \approx 1$

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".

$\bar X =69$ represent the sample mean for the sample

$\mu$ population mean

s=4.0 represent the sample standard deviation

n=64 represent the sample size

Assuming the X follows a normal distribution

$X \sim N(\mu, \sigma)$

The sample mean $\bar X$ have the following distribution:

$\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})$

The margin of error for the sample mean is given by this formula:

$ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$

Since we have the sample standard deviation we can estimate the margin of error like this:

$ME=t_{\alpha/2}\frac{s}{\sqrt{n}}$

The next step would be find the value of $\z_{\alpha/2}$ , $\alpha=1-0.95=0.05$ and $\alpha/2=0.025$

We can find the degrees of freedom like this:

$df=n-1=64-1=63$

And we can find the critical value with the following code in excel for example: "=T.INV(0.025,63)" and we got:

$t_{\alpha/2}=\pm 1.998$

And the margin of error would be :

$ME=1.998 \frac{4}{\sqrt{64}}=0.999 \approx 1$

3 0

3 years ago

Factors of 4x^3-14x^2+12x

IRISSAK [1]

Step-by-step explanation:

4x³ - 14x² + 12x

= 2x[2x² - 7x + 6]

= 2x[(2x-3)(x-2)]

= 2x(2x-3)(x-2)

7 0

3 years ago

Is g h - 5 an expression

Vikki [24]

YES IT IS HOPE IT HELPS YOU ALOT . .
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4 0

3 years ago

When measuring weight 6 small dogs are approximately equal to 9 large cats.

Zolol [24]

Answer:

See below

Step-by-step explanation:

Equation 1:

Step 1:

6 : 9 = x : 54 Ratio

Step 2:

9x = 324 Multiply

Step 3:

36 small dogs Divide

Equation 2:

Step 1:

6 : 9 = x : 12 Ratio

Step 2:

9x = 72 Multiply

Step 3:

8 small dogs Divide

First Answer:

36 small dogs

Second Answer:

8 small dogs

Hope This Helps :)

7 0

3 years ago