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Kobotan [32]
3 years ago
6

Please answer correctly !!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
Tanzania [10]3 years ago
3 0

Answer:

180

Step-by-step explanation:

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What is the value of the product (3 – 2i)(3 + 2i)?<br> A. 5 <br> B. 9 + 4i<br> C. 9 – 4i <br> D. 13
UNO [17]

Answer:

D. 13

Step-by-step explanation:

You can do the product in the straight-forward way ...

... (3 -2i)(3 +2i) = 3·3 +3·2i -3i·3 -(2i)(2i)

... = 9 +6i -6i -4i² . . . . . note the middle two terms cancel

Recognize that i = √-1, so i² = -1. Then the sum is

... = 9 -4(-1) = 9+4 = 13

_____

Your graphing calculator can do this product, too.

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3 years ago
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Answer:

$77 spent in all

Step-by-step explanation:

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3 years ago
How to solve x + 5y = 8x - 20
lara31 [8.8K]

Answer:

Step-by-step explanation:

x + 5y = 8x - 20

     5y = 8x - x -20

      5y = 7x - 20

         y = 7x/5 - 20/5

         y = 7x/5 - 4

4 0
4 years ago
What is the average rate of change of the function f(x)=20(14)xf(x)=20(14)x from x = 1 to x = 2? Enter your answer, as a decimal
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4 0
3 years ago
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A tissue can be 0.000075 meters thick.
Setler [38]

Answer:

The required expression is 7.5\times 10^5

Step-by-step explanation:

Consider the provided information.

A tissue can be 0.000075 meters thick and we need to represent it into scientific notation.

Steps to write a number in scientific notation.

  • Move the decimal place to the right so that the new number from 1 up to 10.
  • Determine the exponent, the exponent is the number of times you moved the decimal.

Now, consider the number 0.000075

Move the decimal point to 5 place right so that the new number from 1 up to 10.

Now, put the exponent the number of times you moved decimal. 7.5\times 10^5

Hence, the required expression is 7.5\times 10^5

5 0
4 years ago
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