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denpristay [2]
2 years ago
10

The product of two numbers is 41. One of the numbers

Mathematics
1 answer:
shepuryov [24]2 years ago
3 0
<h3>Answer:   5 - 4i     (choice A)</h3>

===================================================

Work Shown:

x = the other number

(5+4i)*x = 41

x = 41/(5+4i)

x = 41*(5-4i)/( (5+4i)*(5-4i) ) ..... see note below

x = 41*(5-4i)/( 41 )

x = (41/41)*(5-4i)

x = 5 - 4i  

As a way to check, (5+4i)*(5-4i) = 5^2+4^2 = 25+16 = 41

The rule used is (a-bi)(a+bi) = a^2 + b^2

-----------

Note:  I multiplied top and bottom by (5-4i) to get rid of the imaginary term in the denominator.

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3 years ago
Help me with 5 and 6 please I really don’t get it
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Answer:

5 is congruent, 6 is not congruent

Step-by-step explanation:

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In 6, the shapes do not have the same side lengths. This means their areas are not the same, making them not congruent.

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Answer:

4 to the -2 power divided by 4 to the 4th power

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A cone of diameter 8 cm and a height 8cm.
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Hope This Helps You!

Read more on Brainly.in - https://brainly.in/question/1107937#readmore

Step-by-step explanation:

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