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Liono4ka [1.6K]
3 years ago
11

4(-8x + 5) = -32x - 26

Mathematics
1 answer:
Margaret [11]3 years ago
6 0

Answer:

No solutions

Step-by-step explanation:

4(-8x + 5) = -32x - 26

Expanding the parentheses:

-32x+20=-32x-26

Adding 32x to both sides:

20=-26

This equation has no solutions, because these two are not equal. Hope this helps!

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Step-by-step explanation: Perimeter (p) =2L+ 2w

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Remove bracket

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"You measure 34 dogs' weights, and find they have a mean weight of 67 ounces. Assume the population standard deviation is 13.5 o
liraira [26]

Answer:

The 95% confidence interval for the true population mean dog weight is between 62.46 ounces and 71.54 ounces.

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{1-0.95}{2} = 0.025

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

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M = 1.96*\frac{13.5}{\sqrt{34}} = 4.54

The lower end of the interval is the sample mean subtracted by M. So it is 67 - 4.54 = 62.46 ounches.

The upper end of the interval is the sample mean added to M. So it is 67 + 4.54 = 71.54 ounces.

The 95% confidence interval for the true population mean dog weight is between 62.46 ounces and 71.54 ounces.

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