2 years ago

Describe the main parts of a proof.

Mathematics

1 answer:

Leya [2.2K]2 years ago

5 0

Answer:

ok i want to help but wdym by a proof

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Interpret the results in the context of your original research question. Do your analyses support your expected findings? Explai

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Step-by-step explanation:

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3 years ago

The cost for 4 hours of math tutoring is 186. The cost for 24 hours is 1001. Write a linear equation to find the total cost “C”

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2 years ago

A sample of 5 strings of thread is randomly selected and the following thicknesses are measured in millimeters. Give a point est

liq [111]

Answer:

$s^2 = \frac{(1.48-1.502)^2 +(1.45-1.502)^2 +(1.54-1.502)^2 +(1.52-1.502)^2 +(1.52-1.502)^2}{5-1} =0.00132$

And for the deviation we have:

$s= \sqrt{0.00132}=0.0363$

And that value represent the best estimator for the population deviation since:

$E(s) =\sigma$

Step-by-step explanation:

For this case we have the following data:

1.48,1.45,1.54,1.52,1.52

The first step for this cae is find the sample mean with the following formula:

$\bar X =\frac{\sum_{i=1}^n X_}{n}$

And replacing we got:

$\bar X= \frac{1.48+1.45+1.54+1.52+1.52}{5} = 1.502$

And now we can calculate the sample variance with the following formula:

$s^2 =\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}$

And replacing we got:

$s^2 = \frac{(1.48-1.502)^2 +(1.45-1.502)^2 +(1.54-1.502)^2 +(1.52-1.502)^2 +(1.52-1.502)^2}{5-1} =0.00132$

And for the deviation we have:

$s= \sqrt{0.00132}=0.0363$

And that value represent the best estimator for the population deviation since:

$E(s) =\sigma$

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2 years ago

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What is the solution to this equation 3(80 - 9x) = x - 96

andreev551 [17]

240-27x = x-96

240 - 28x = -96

28x = 336

x = 12

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2 years ago

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