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2 years ago

Find the slope of a line through the points (-5, 2) and (-5, 4).

Mathematics

2 answers:

valkas [14]2 years ago

7 0

Answer:

Step-by-step explanation:

Slope = (y2-y1)/(x2-x1)

= (4-2)/(-5-(-5))

= 2/0

Which is undefined

Alternately,

Since both points have x-coordinate of -5, they lie on the line x = -5

which is a vertical line (parallel to y-axis).

Every vertical line has an undefined slope

dybincka [34]2 years ago

6 0

The slope is undefined, because the x values are the same.

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What is the solution of the equation when solved over the complex numbers?

kumpel [21]

Answer:

$x=+i\sqrt{20}\approx+4.472i$

$x=-i\sqrt{20}\approx-4.472i$

Step-by-step explanation:

Starting from $x^2+20=0$ , we do $x^2=-20$ , which means $x=\pm\sqrt{-20}$ , which can be written as $x=\pm\sqrt{(-1)(20)}$ , which gives us $x=\pm\sqrt{(-1)}\sqrt{(20)}$ , which we know is $x=\pm i \sqrt{(20)}$ , so our solutions are:

$x=+i\sqrt{(20)}$

$x=-i\sqrt{(20)}$

Which can be approximated to:

$x\approx+4.472i$

$x\approx-4.472i$

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3 years ago

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2 years ago

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2 years ago

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2 years ago

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