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4 years ago

NEED HELP QUCKILY PLZ HURRY

Mathematics

2 answers:

wariber [46]4 years ago

4 0

I want to say 17 but I don't know for sure

Tamiku [17]4 years ago

4 0

Answer:

I believe it would be 71 since 46 degrees would equal a .8 radians and would equal a 51.11 gradians so my best guess off of that I would say C but you could add 63 and 46 and get 109 but I really believe its c and if you got to retake it try 109

Step-by-step explanation:

It would be C if it has to equal 180

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Express 6cm as a percentage of 7.5m

Svetach [21]

Answer:

0.8%

Step-by-step explanation:

First, convert 7.5 m to cm.

There are 100 cm in one meter, so to convert this, multiply 7.5 by 100:

7.5(100)

= 750

So, there are 750 cm in 7.5 m.

To find the percent of 6 cm, divide 6 by 750, then multiply by 100:

(6/750) x 100

= 0.008 x 100

= 0.8

So, 6 cm as a percentage of 7.5 m is 0.8%

3 0

3 years ago

I need help plz. Its DeMoivres Theorem

vagabundo [1.1K]

$\bf \qquad \textit{power of two complex numbers} \\\\\ [\quad r[cos(\theta)+isin(\theta)]\quad ]^n\implies r^n[cos(n\cdot \theta)+isin(n\cdot \theta)] \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ z=\stackrel{a}{-1}\stackrel{b}{-\sqrt{3}~i}~~ \begin{cases} r=\sqrt{a^2+b^2}\\ \theta =tan^{-1}\left( \frac{b}{a} \right)\\[-0.5em] \hrulefill\\ r=\sqrt{(-1)^2+(\sqrt{3})^2}\\ \qquad \sqrt{4}\\ \qquad 2\\ \theta =tan^{-1}\left( \frac{-\sqrt{3}}{-1} \right)\\\\ \qquad \frac{4\pi }{3} \end{cases}$

$\bf z=2\left[ cos\left( \frac{4\pi }{3} \right) -i~sin\left( \frac{4\pi }{3} \right)\right]\implies z^6=\left[ 2\left[ cos\left( \frac{4\pi }{3} \right) -i~sin\left( \frac{4\pi }{3} \right)\right] \right]^6 \\\\\\ z^6=2^6\left[ cos\left( 6\cdot \frac{4\pi }{3} \right) -i~sin\left( 6\cdot \frac{4\pi }{3} \right)\right]\implies z^6=64[cos(8\pi )-i~sin(8\pi )] \\\\\\ z^6=64[(-1)-i~(0)]\implies z^6=\stackrel{\stackrel{a}{\downarrow }}{-64}~~\stackrel{\stackrel{b}{\downarrow }}{-0i}$

4 0

4 years ago

What is the least common denominator between 3/4 4/5 and 2/3

Dominik [7]

Answer:

The Least Common Denominator of 3/4, 4/5 and 2/3

Would be,

4 × 5 × 3 = 60

Hence,

60 is the L.C.D of 3/4, 4/5 and 2/3

3 0

3 years ago

0.1% of what number is 4?

finlep [7]

$0.4$
that is my answer

4 0

4 years ago

Read 2 more answers

The area of a circle was calculated to be 1386cm^2 . What is the circumference of the same circle

zvonat [6]

Answer:

A Area

1386cm²

Using the formulas

A=πr²

C=2πr

Solving forC

C=2√πA

=2·√π·1386

≈131.97344cm

Step-by-step explanation:

Hope it is helpful...

4 0

3 years ago