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3 years ago

Estimate the square root of 300 and 190

Mathematics

2 answers:

mihalych1998 [28]3 years ago

7 0

Answer:

Step-by-step explanation:

ikadub [295]3 years ago

3 0

For 300..about 17
For 190..about 14

300: 17.320
190: 13.784

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2 years ago

(25 POINTS) 10. Find the sum of the arithmetic sequence. 5, 7, 9, 11, ..., 23

Taya2010 [7]

Answer:

Sum = 140

Step-by-step explanation:

We find all the terms, we know that every consecutive term, we add 2 until we reach 23:

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2 years ago

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2 years ago

In the third week of July, a random sample of 40 farming regions gave a sample mean of x = $6.88 per 100 pounds of watermelon. A

suter [353]

Answer:

a. [6.6350,7.3950]

b. ME=0.5150

Step-by-step explanation:

a. Given that n=40, $\bar x=6.88$ and that: $z_{\alpha/2}=z_{0.05}=1.645$

The required 90% confidence interval can be calculated as:

$\bar x\pm(margin \ of \ error)\\\\\bar x\pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}\\\\6.88\pm(1.645\times \frac{1.98}{\sqrt{40}})\\\\=[6.3650,7.3950]$

Hence, the 90% confidence interval for the population mean cash value of this crop is [6.6350,7.3950]

b. The margin of error at 90% confidence interval is calculated as:

$ME= z_{\alpha/2}\frac{\sigma}{\sqrt{n}}\\\\=(1.645\times \frac{1.98}{\sqrt{40}})\\\\=0.5150$

Hence, the margin of error is 0.5150

8 0

3 years ago

What squared equals 125

OLga [1]

Answer:

The answer is about 11.1803399

Step-by-step explanation:

To find what squared equals 125, you will have to take the square root of 125.

$\sqrt{125}$ ≈ 11.1803399

$11.1803399^{2}$ ≈ 125

4 0

3 years ago

Read 2 more answers