3 years ago

Determine which regions contain cube roots of 8i. Check all that apply.

Mathematics

2 answers:

fenix001 [56]3 years ago

5 0

Answer:

2,3,4

Step-by-step explanation:

lapo4ka [179]3 years ago

5 0

Answer:

this is the right answer

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Eliminate the parameter,t, in the parametric equation, x=6cos t, and y =3 sin t

german

X = 6 cos(t)
y = 3 sin(t)

we can rewrite these equations as:

$\frac{x}{6}=cost(t) \\ \\ \frac{y}{3} =sin(t)$

Taking squares of both equations we get:

$( \frac{x}{6})^{2}=sin^{2} (t) \\ \\ 
( \frac{y}{3})^{2}=cos^{2}(t)$

Adding both the equations, we get:

$\frac{ x^{2} }{36}+ \frac{ x^{2} }{9}=sin^{2}(t)+cos^{2}(t) \\ \\ 
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Step-by-step explanation:

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3 years ago

Which fraction is equivalent to <img src="https://tex.z-dn.net/?f=%5Cfrac%7B21%7D%7B28%7D" id="TexFormula1" title="\frac{21}{28}

BaLLatris [955]

$\dfrac{21}{28}=\dfrac{21:7}{28:7}=\dfrac{3}{4}\to\boxed{C}$