Here you go mate. Very easy concept to learn :D good luck in your studies
Answer:
Correct option: (A)
Step-by-step explanation:
The correlating linear model to investigate the use of text messaging over time is:
The general simple linear regression line is given by,
Here,
<em>α</em> = intercept of <em>y</em>,
<em>β</em> = slope (or regression) coefficient,
<em>X</em> = independent variable = number of years after 2006
<em>Y</em> = dependent variable = average number of text messages a person sends monthly.
The given regression line (or estimating line) is, .
The <em>y</em>-intercept is the expected mean value of Y when X = 0.
Compute the <em>y</em>-intercept as follows:
So, the <em>y</em>-intercept of 65 implies that in 2006 the average number of texts sent by a person is 65 texts per month.
Thus, the correct option is (A).
20’ / 5’ = 4
4 x 10” = 40”
40’ /5’ = 8
8 x 10” = 80”
Scaled dimension: 40” x 80”
The only expressions that are correctly factored are;
A) 16a⁵ - 20a³ = 4a³(4a² - 5)
B) 24a⁴ + 18 = 6(4a⁴ + 3)
C) 12a³ + 8a = 4a(3a² + 2)
D) 30a⁶ - 24a² = 3a²(10a⁴ - 8)
<h3>How to factorize equations?</h3>
1) 16a⁵ - 20a³
To factorize this, we will have to get out the common factor first. The common factor is 4a³. Thus, we now have;
4a³(4a² - 5)
2) 24a⁴ + 18
To factorize this, we will have to get out the common factor first. The common factor is 6. Thus, we now have;
6(4a⁴ + 3)
3) 12a³ + 8a
To factorize this, we will have to get out the common factor first. The common factor is 4a. Thus, we now have;
4a(3a² + 2)
4) 30a⁶ - 24a²
To factorize this, we will have to get out the common factor first. The common factor is 3a². Thus, we now have;
3a²(10a⁴ - 8)
Read more about factorization of equations at; brainly.com/question/723406
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Answer:
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Step-by-step explanation:
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