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natali 33 [55]
3 years ago
14

Simplify and show your work -8 + 4i / 4 - 4i

Mathematics
1 answer:
zhenek [66]3 years ago
7 0
=  ( -8 + 4i ) / (4 - 4i ) = 4(-2 + i )  /  4( 1- i ) = ( -2 + i )  /  ( 1 - i )
=  (i  - 2  )(-i +1)^-1
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the greater of two numbers is 1 less than 4 times the lesser. three times the lesser number is 4 less than the greater. find the
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<h2>Steps:</h2>

So for this, we will be doing a system of equations. Using the info from our question, our two equations are:

(let x = greater number and y = lesser number)

x=4y-1\\3y=x-4

Now, for this I will be using the substitution method. Since we know that x = 4y - 1, substitute that into the second equation:

3y=4y-1-4

From here we can solve for y. Firstly, combine like terms:

3y=4y-5

Next, subtract 4y on both sides of the equation:

-y=-5

Next, multiply both sides by -1:

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Now that we know the value of y, substitute it into either equation to solve for x:

x=4(5)-1\\x=20-1\\x=19\\\\3(5)=x-4\\15=x-4\\19=x

<h2>Answer:</h2>

In short, <u>5 is the lesser number and 19 is the greater number.</u>

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