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3 years ago

75y^3+100y^2-3y-4=0

Mathematics

1 answer:

sweet [91]3 years ago

7 0

Move all terms to the left side and set equal to zero. Then set each factor equal zero.
y = -4/3, 1/5, 1/5

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djverab [1.8K]

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2 years ago

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Troyanec [42]

Answer:

Regression Line is given by,

y = 22.909 + 0.209 x

The course grade of a student in the course who spent an average of 103 minutes in the course each week is: 22.909 + 0.209 × 103 = 44.436

Step-by-step explanation:

The equation of Regression equation is of the form of:

y = a + bx

where, a is intercept and b is slope

The formula for a and b is given by,

$a=\frac{\sum Y \sum X^2-\sum X \sum XY}{n\sum X^2-(\sum X)^2}\\ and, b = \frac{n\sum XY -\sum X \sum Y}{n\sum X^2-(\sum X)^2}$

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Thus, a = 22.909

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Thus, Regression Line is given by,

y = 22.909 + 0.209 x

Thus, The course grade of a student in the course who spent an average of 103 minutes in the course each week is: 22.909 + 0.209 × 103 = 44.436

Now plotting these line:

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Step-by-step explanation:

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Step-by-step explanation:

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