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Lena [83]
3 years ago
15

What is the value of the product (4 - 21)(6 + 2/)? 20 - 41 20 + 161 28 + 161 28 - 41

Mathematics
1 answer:
xeze [42]3 years ago
3 0

Answer:

  28 -4i

Step-by-step explanation:

Perhaps you want the product ...

  (4 -2i)(6 +2i)

Multiplying in the usual way, we get ...

  (4)(6) +(4)(+2i) +(-2i)(6) +(-2i)(2i)

  = 24 +8i -12i -4i^2

Recognizing that i^2 = -1, we can collect terms to get ...

  = 24 +i(8 -12) -4(-1)

  = 28 -4i

_____

Please note that i = √(-1) is not the same as 1 or /. You may need to edit your question to ensure the correct symbol is used.

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A group of 4 people go out to eat. They split the bill so that each person pays 1/4 of the total price appetizers is $6 main dis
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Answer:

(6 + 9) / 4

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3 0
3 years ago
The area of a triangle is 1,4440 cm^2. The base of the triangle is 5 times the height. What is the height of the triangle?
DochEvi [55]

Answer:

h = 24 cm

Step-by-step explanation:

The formula for area of a triangle is

A = (1/2)bh     where b is the base and h is the height.

We are told that the base is 5 times the height, this translates to

b = 5h, so we can rewrite our formula to

A = (1/2)(5h)(h)  or

A = (1/2)5h²

We are given A = 1,440, so plug that in and solve for h...

1,440 = (1/2)5h²

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      576 = h²    (divide both sides by 5 to get the h value by itself)

         24 = h     (take the square root of both sides)

3 0
3 years ago
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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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Does anyone know to solve this?
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Answer:

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3 years ago
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