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QveST [7]
3 years ago
6

Always, sometimes, or never true

Mathematics
2 answers:
Kitty [74]3 years ago
8 0
I think it’s always because the absolute value is always positive.
STatiana [176]3 years ago
3 0
It is always positive because any numbers absolute value is equal to its reciprocals absolute value
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Consider a nine -year moving average used to smooth a time series that was first recorded in 1961. a. Which year serves as the f
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Answer:

  a.  1965

  b.  8 years

Step-by-step explanation:

For answers to questions like these it can work to consider the smallest possible dataset.

<h3>Dataset</h3>

For our purpose, consider the 9 years/values to be averaged to be ...

  1, 2, 3, 4, 5, 6, 7, 8 ,9

<h3>Observations</h3>

a. The center value of the data set is 5. Its number is 5-1=4 more than the first one.

The first centered value is from the year 1961 +4 = 1965.

b. The 4 values at the beginning, and the 4 values at the end do not have a corresponding "average" value. That is, 4+4 = 8 values in the series are lost with respect to the number of average values.

8 years of values are lost.

5 0
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Three perfect cube blocks of different volumes were stacked on top of each other. The top block was 64 cubic centimeters, the mi
lesya [120]
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[volume of a cube]=b³---------> b=∛Volume
b------> is the side length of a cube

The top block was 64 cm³------> b1=∛64-------> b1=4 cm
The middle block was 125 cm³------> b2=∛125------> b2=<span>5 cm
T</span>he biggest block was 729 cm³------> b3=√729------> b3=<span>9 cm

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the answer is
</span>the stack of blocks was 18 cm tall<span>


</span>
5 0
3 years ago
Find the common ratio of the geometric sequence-15,-30,-60
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Answer:

2

Step-by-step explanation:

The common ratio of the sequence is 2 because between each term you are multiplying by 2 to get the next term

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