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3 years ago

11

Find the surface area

1 answer:

Salsk061 [2.6K]3 years ago

6 0

Answer:

aww you had my question opennnn

Step-by-step explanation:

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Solve using demoivres theorem

pashok25 [27]

It's difficult to make out, but I think the task is to expand

$(\sqrt3-i)^4$

Write the number in polar form first:

$\sqrt3-i=2e^{-i\pi/6}$

By DeMoivre's theorem, you have

$(\sqrt3-i)^4=\left(2e^{-i\pi/6}\right)^4=2^4e^{-i4\pi/6}=16e^{-i2\pi/3}$

and converting back to Cartesian form, this number is equivalent to

$16\left(\cos\dfrac{2\pi}3-i\sin\dfrac{2\pi}3\right)=16\left(-\dfrac12+-\dfrac{\sqrt3}2\right)=-8(1+i\sqrt3)$

3 0

3 years ago

(b) Eric removed 72 fish from his pond over a period of 9 days. He removed the same number of

Amanda [17]

Answer:

-8

Step-by-step explanation:

72 ÷ 9 = 8

The fish are being taken out, so negative.

I hope this helps!

pls ❤ and mark brainliest pls!

8 0

3 years ago

During the first week a soap shop was open, it has $2000 in total sales. During the second week the soap shop had a 100% increas

Aleksandr [31]

If you sold 2000 in the first week and a hundred percent more second week it would be 2000

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4 years ago

By which angle is a pentagon

Liono4ka [1.6K]

Answer:

540° this is what you mean but if i'm wrong sorry.

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

during a recent regular season, a taxas ranger baseball player had 126 hits and was a bat 399 times. write a fraction in simples

tia_tia [17]

Take 126/399 and divide it by 3. then you get 42/133. There is no other numbers that divide equally into the numbers, so you are done.

3 0

3 years ago