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3 years ago

Find the distance between the points J(−8, 0) and K(1, 4)

Mathematics

1 answer:

jasenka [17]3 years ago

8 0

Answer:

Add a picture please :)

Step-by-step explanation:

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HACTEHA [7]

Answer:

number 1 is 5 inches

Step-by-step explanation:

it fits in the 15 inches 3 times.

5*3=15

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3 years ago

What is the positive solution to this equation? 3x²+4x-5=0

ioda

Answer:

0.786

Step-by-step explanation:

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3 years ago

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lianna [129]

Place the point of the compass on the intersection of AB and CD and extend the compasses to point R.

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3 years ago

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Is (-2, 4) a solution of the graphed inequality? Choose 1 answer: Yes No

mr_godi [17]

Answer:

Yes

Step-by-step explanation:

I think the test

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4 years ago

Trigonometric question, 30 points, will give brainliest.

zheka24 [161]

hmmm first off let's convert the √3 +i to trigonometric form, and then use De Moivre's root theorem, bearing in mind that √3 and i or 1i are both positive, meaning we're on the I Quadrant.

$\bf (\stackrel{a}{\sqrt{3}}~,~\stackrel{b}{1i})\qquad \begin{cases} r=&\sqrt{(\sqrt{3})^2+1^2}\\ &\sqrt{3+1}\\ &2\\ \theta =&tan^{-1}\left( \frac{1}{\sqrt{3}}\right)\\\\ &tan^{-1}\left( \frac{\sqrt{3}}{3} \right)\\ &\frac{\pi }{6} \end{cases}~\hfill \implies ~\hfill 2\left[ cos\left( \frac{\pi }{6}\right) +i~sin\left( \frac{\pi }{6}\right) \right]$

$\bf ~\dotfill\\\\ \qquad \textit{power of two complex numbers} \\\\\ [\quad r[cos(\theta)+isin(\theta)]\quad ]^n\implies r^n[cos(n\cdot \theta)+isin(n\cdot \theta)] \\\\[-0.35em] ~\dotfill$

$\bf \left[ 2\left[ cos\left( \frac{\pi }{6}\right) +i~sin\left( \frac{\pi }{6}\right) \right] \right]^3\implies 2^3\left[ cos\left( 3\cdot \frac{\pi }{6}\right) +i~sin\left( 3\cdot \frac{\pi }{6}\right) \right] \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill 8\left[cos\left( \frac{\pi }{2} \right) +i~sin\left( \frac{\pi }{2} \right) \right]~\hfill$

3 0

4 years ago