4 years ago

How do you write a number as a complex number in standard form?

1 answer:

4 0

Standard form for complex numbers is a+bi where a and b are real numbers. Hope this helps

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A freight ship has been moving at 19 miles per hour for the past 2 days. Hugo recorded that the ship moved 155 miles yesterday a

Sonbull [250]

Answer:

13 hours

Step-by-step explanation:

155 + 92 = 247

247 / 19 = 13

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2 years ago

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horrorfan [7]

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4 years ago

Can someone please tell me what (-8)^-2 is? Thanks!

KIM [24]

Answer:

$\frac{1}{ - 8 {}^{2} } \\ = - \frac{1}{64}$

Step-by-step explanation:

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3 years ago

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Hatshy [7]

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3 years ago

if a rectangle is twice as long as it wide and has a perimeter of 48 inches, what is the area of the rectangle

luda_lava [24]

Answer: 128 $in^{2}$

Step-by-step explanation:

Let the width be W then the length will be 2W since it is twice as long as it width.

The formula for calculating the perimeter of a rectangle is given by :

P = 2 ( L + W )

48 = 2 ( W + 2W )

48 = 2(3W)

48 = 6W

Divide through by 6

Therefore:

W = 48/6

W = 8 inches

This means that the Length is 2 x 8 = 16 inches

Area = Length x breadth

Area = 16 x 8

Area = 128 $in^{2}$

4 0

3 years ago