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3 years ago

A line of best fit has a correlation of -0.98. What can you conclude about the slope of the line?

2 answers:

8 0

You can conclude that the slope of the line of best fit is FAIRLY accurate. -0.98 is a very good correlation coefficient as it's very close to 1. The closer the coefficient is to one, the more accurate the line is. Hope this helped :)

Anna35 [415]3 years ago

3 0

You might be interested in

Solve for x in the equation.

labwork [276]

Answer:

The solution is $\displaystyle x=1\pm \sqrt{47}$ . Fourth option

Explanation:

Solve for x:

$2x^2+3x-7=x^2+5x+39$

Move all the terms from the right to the left side of the equation, a zero in the right side:

$2x^2+3x-7-x^2-5x-39=0$

Join all like terms:

$x^2-2x-46=0$

The general form of the quadratic equation is:

$ax^2+bx+c=0$

Solve the quadratic equation by using the formula:

$\displaystyle x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

In our equation: a=1, b=-2, c=-46

Substituting into the formula:

$\displaystyle x=\frac{-(-2)\pm \sqrt{(-2)^2-4(1)(-46)}}{2(1)}$

$\displaystyle x=\frac{2\pm \sqrt{4+184}}{2}$

$\displaystyle x=\frac{2\pm \sqrt{188}}{2}$

Since 188=4*47

$\displaystyle x=\frac{2\pm \sqrt{4*47}}{2}$

Take the square root of 4:

$\displaystyle x=\frac{2\pm 2\sqrt{47}}{2}$

Divide by 2:

$\displaystyle x=1\pm \sqrt{47}$

First option: Incorrect. The answer does not match

Second option: Incorrect. The answer does not match

Third option: Incorrect. The answer does not match

Fourth option: Correct. The answer matches exactly this option

8 0

3 years ago

What is 6050.287 rounded to the nearest ten

ra1l [238]

It should be 6100 which rounded to the nearest ten gives 61 × 10²

5 0

4 years ago

67 1/2 * (-1/3) it is due on Wednesday and for some reason I cont figure out this one

krok68 [10]

Answer:

-45/2

Step-by-step explanation:

67 1/2 * (-1/3)

67 1/2 = 135/2

So 135/2*1/3=45/2

45/2*-1=-45/2

7 0

1 year ago

ANEK [815]

Answer:

Step-by-step explanation:

NEED MORE INFO...

8 0

3 years ago

What is the domain of the function using the graph?

Fofino [41]

The answer is B) x is equal to all real numbers.

The domain of a function is the numbers for x that you can put in. Although the y-values are restricted here, you can put any number you want in for x. Therefore, x is equal to all real numbers.

6 0

4 years ago