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4vir4ik [10]
3 years ago
6

20×10 cubed=2,000 true or false

Mathematics
1 answer:
Nataliya [291]3 years ago
6 0

Well, your question can be read and understood in two different ways,
depending where the parentheses are supposed to be.

Here are the questions and answers for both ways:


Way #1:    (20) x (10)³

(10)³ = 1,000

20 x 1,000 = 20,000

That's not 2,000 so the equation is false.

======================================

Way #2:    (20 x 10)³

20 x 10 = 200

(200)³ = 8,000,000

That's not 2,000 either so the equation is false again.

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4 remaining math books, out of the 14 remaining books

In the middle, there are two potential spots adjacent to each book, so it could be higher - that’s why I say “at least” 4/14

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A farmer wants to know which of two fertilizers will yield the most produce. He sets up twenty random plots of equal size on one
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<h2>Answer:</h2>

A)

Mean for:

Sample Z --  447.5

Sample Y-- 409.3

B)

Sample Y has larger deviation from the mean.

<h2>Step-by-step explanation:</h2>

Z Plots      Y Plots  

 456          395

 454          390

 449          391

 453          402

 431           395

 456          405

 445          432

 430          438

 463          420

 438          425

A)

For sample Z--

The mean is calculated by:

Ratio of sum of all the data points of Z-sample to the total number of points i.e. 10.

Mean=\dfrac{456+454+449+453+431+456+445+430+463+438}{10}\\\\Mean=\dfrac{4475}{10}\\\\Mean=447.5

Similarly for sample Y--

The mean is calculated as follows:

Mean=\dfrac{395+390+391+402+395+405+432+438+420+425}{10}\\\\\\Mean=\dfrac{4093}{10}\\\\Mean=409.3

B)

As we could see that the data Y has a greater spread from the mean as compared to the sample Z.

As all the points in the sample Z are close to the mean and have less spread.

The standard deviation is most commonly used to measure the spread of the data.

Standard deviation of sample Z is: 10.651

Standard deviation of sample Y is: 16.9944

Hence Sample Y have larger deviation from the mean.

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