1 year ago

PLEASE help me answer this!!!

Mathematics

1 answer:

tia_tia [17]1 year ago

8 0

Check the picture below.

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Solve for the roots in the equation below. In your final answer, include each of the necessary steps and calculations.

Nostrana [21]

$x^3-27i=0$
$x^3=27i$
$x^3=27e^{i\pi/2}$
$x=\left(27e^{i\pi/2}\right)^{1/3}$
$x=3e^{i(\pi/2+2\pi k)/3}$
$x=3e^{i\pi(4k+1)/6}$

where $k\in\{0,1,2\}$ . This means you have

$x=3e^{i\pi/6}=\dfrac32(\sqrt3+i)$
$x=3e^{i5\pi/6}=\dfrac32(-\sqrt3+i)$
$x=3e^{i9\pi/6}=-3i$

as the solutions to the original equation.

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3 years ago

If you drew a horizontal line on the coordinate plane, what could you say about the y-coordinate for every point on the line?

sattari [20]

It's the y intercept.
If y = a then every point on the line would be (x,a)
The lines slope is 0. I know that has nothing to do with the question, but it is true and it gives me 3 things to tell you.

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2 years ago

Look at the photo pick A B C D either one explanation not needed thank you! <3

elena55 [62]

Answer:

Step-by-step explanation:

8 0

2 years ago

SOME ONE PLEASE HELP I WILL GIVE 20 POINTS

exis [7]

The answer to this question is 7x+1

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2 years ago

On Tuesday, Donovan earned $11 for 2 hours of babysitting. On Saturday, he babysat for the same family and earned $38.50. How ma

Lina20 [59]

$11=2 hrs

2hrs=$11
+2(4hrs)=$22
+2(6hrs)=$33 hrs

so 6 hrs or 7 hours and some
minutes left

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3 years ago