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Harlamova29_29 [7]
2 years ago
14

Determine the values of aaa and kkk when 299,790,000299,790,000 is written in scientific notation. Enter aaa and kkk, separated

by commas.
Mathematics
1 answer:
wolverine [178]2 years ago
7 0

The values of a and k are 3.0 and 8

<h3>Scientific notations</h3>

Scientific notation is used to represent numbers in standard form

The scientific notation of a number is represented as:

a \times 10^k

The number is given as:

299,790,000

So, we have:

a \times 10^k = 299790000

Rewrite the number as follows:

a \times 10^k = 2.9979 \times 10^8

Approximate the number

a \times 10^k = 3.0 \times 10^8

By comparison:

The values of a and k are 3.0 and 8

Read more about scientific notations at:

brainly.com/question/1767229

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Students reported practicing violin during the last semester for 45, 38, 52, 58, and 42 hours. What is the mean absolute deviati
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The mean absolute deviation for the number of hours students practiced the violin is 6.4.

<h3>What is the mean absolute deviation?</h3>

The average absolute deviation of the collected data set is the average of absolute deviations from a center point of the data set.

Given

Students reported practicing violin during the last semester for 45, 38, 52, 58, and 42 hours.

The given data set is;

45, 38, 52, 58, 42

Mean Deviation = Σ|x − μ|/N.

μ = mean, and N = total number of values

|x − μ| = |45 − 47| = 2

|38− 47| = 9

|52− 47| = 5

|58− 47| = 11

|42− 47| = 5

The mean absolute deviation for the number of hours students practiced the violin is;

\rm Mean =\dfrac{2+9+5+11+5}{5}\\\\Mean=\dfrac{32}{5}\\\\Mean = 6.4

Hence, the mean absolute deviation for the number of hours students practiced the violin is 6.4.

To know more about mean value click the link given below.

brainly.com/question/5003198

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