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3 years ago

Whats your name, you are awesome

SAT

2 answers:

Hitman42 [59]3 years ago

6 0

My name is Arianna and Ykw?!! I am awesome

Andrei [34K]3 years ago

5 0

You already know mine but gimme her number frfr if you got it or ask Astro for it

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Simplify: 1 + i + i^2 + i^3 +i^4 +i^5 if i^2 =-1.

Vika [28.1K]

1 + i + i ² + i ³ + i ⁴ + i ⁵ = 1 + i + i ² (1 + i + i ² + i ³)

… = 1 + i + i ² (1 + i + i ² (1 + i ))

… = 1 + i + (-1) (1 + i + (-1) (1 + i ))

… = 1 + i + (-1) (1 + i - 1 - i )

… = 1 + i

Alternatively, notice that

1 - i ⁶ = (1 - i ) (1 + i + i ² + i ³ + i ⁴ + i ⁵)

so that

1 + i + i ² + i ³ + i ⁴ + i ⁵ = (1 - i ⁶) / (1 - i )

Now, i ⁶ = (i ²)³ = (-1)³ = -1, so

1 + i + i ² + i ³ + i ⁴ + i ⁵ = (1 - (-1)) / (1 - i )

… = 2 / (1 - i )

Multiply the numerator and denominator by the conjugate of 1 - i :

… = 2 (1 + i ) / ((1 - i ) (1 + i ))

… = 2 (1 + i ) / (1² - i ²)

… = 2 (1 + i ) / (1 + 1)

… = 1 + i

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2 years ago

Read 2 more answers

Control groups are used in scientific experiments because they

aliya0001 [1]

Answer:

Explanation:

It prevents other variables such as independent variables and extraneous variables from affecting the validity of results. It also makes it easier to compare results when variables are changed.

Hope this helps :)

4 0

2 years ago

Large birds like pheasants often walk short distances. Small birds like chickadees never walk. They either hop or fly. Why might

nevsk [136]

Answer:

Large birds can't fly due to higher weight and weak wings.

Why large birds can't fly?

Large birds like pheasants often walk short distances whereas small birds like chickadees never walk but fly because the large birds have more weight which can't support by the wings to fly in the sky so they walk on the land instead of flying.

While on the other hand, small birds have lower weight and easily fly in the sky so they don't need to walk on the ground so we can conclude that large birds can't fly due to higher weight and weak wings.

Explanation:

Answer:

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2 years ago

Nam 2 outstanding persons who are associated with the establishment of this religion group? the rastafarianism

grin007 [14]

Leonard Howell and Joseph Hibbert.

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2 years ago

The gulf stream and global warming reading answers pdf.

Mrrafil [7]

The Gulf Stream simply means the strong ocean current which brings warm water from the Gulf of Mexico till it gets to the Atlantic Ocean.

Your information is incomplete. Therefore, an overview of the topic will be given. It should be noted that the Gulf Stream is a warm ocean current that is in the Western North Atlantic Ocean.

Global warming simply means the long-term heating of the Earth. It's the long-term shift in the weather patterns. This can be a result of the burning of fossil fuels which then produce heat-trapping gases.

Learn more about global warming on:

brainly.com/question/3553382

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2 years ago