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3 years ago

Consider the system of equations.

Mathematics

2 answers:

ANTONII [103]3 years ago

8 0

THat would be B
Addition Property of EQuality

bixtya [17]3 years ago

7 0

Like the person said beforehand B. You have no need to multiply anything since you already have +4y and -4y so you go on ahead and add the problems. Just thought you may want an explanation

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Can I get some help with this please.

Ratling [72]

Answer:

The y-intercept represent:

122,000 (1985) represents the starting population from when they began calculating the data.

Step-by-step explanation:

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4 years ago

Calculate the kinetic energy of a block which is 30 kg it is moving with a velocity of 20 m/s to the left

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Answer:

Step-by-step explanation:

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3 years ago

Pattern:

Radda [10]

Answer:

Sue is correct

Step-by-step explanation:

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3 years ago

Can someone please help me? Extra points!! Thank you in advance!! :) (btw it is NOT “B”, I have already tried B and it is incorr

lilavasa [31]

Answer:

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4 0

3 years ago

A distance AB is observed repeatedly using the same equipment and procedures, and the results, in meters, are listed below: 67.4

skad [1K]

Answer:

a) $\bar X =\frac{67.401+67.400+67.402+67.396+67.406+67.401+67.396+67.401+67.405+67.404}{10}=67.401$

b) The sample deviation is calculated from the following formula:

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

And for this case after replace the values and with the sample mean already calculated we got:

$s=0.0036$

If we assume that the data represent a population then the standard deviation would be given by:

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

And then the deviation would be:

$\sigma =0.00319$

Step-by-step explanation:

For this case we have the following dataset:

67.401, 67.400, 67.402, 67.396, 67.406, 67.401, 67.396, 67.401, 67.405, and 67.404

Part a: Determine the most probable value.

For this case the most probably value would be the sample mean given by this formula:

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

And if we replace we got:

$\bar X =\frac{67.401+67.400+67.402+67.396+67.406+67.401+67.396+67.401+67.405+67.404}{10}=67.401$

Part b: Determine the standard deviation

The sample deviation is calculated from the following formula:

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

And for this case after replace the values and with the sample mean already calculated we got:

$s=0.0036$

If we assume that the data represent a population then the standard deviation would be given by:

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

And then the deviation would be:

$\sigma =0.00319$

3 0

4 years ago