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Neporo4naja [7]
3 years ago
10

Rationalize the denominator of square root of negative 9 over open parentheses 4 minus 7 i close parentheses minus open parenthe

ses 6 minus 6 i close parentheses.
Mathematics
1 answer:
svetlana [45]3 years ago
3 0
First we combine the parenthesis to get 9/(-2-i)  then we multiply both the numerator and the denomenator by the conjugate of -2-i (whic is -2+i) to get (-18+9i)/5
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V125BC [204]

Hi there,

Your question is "twice a number (x) is fifty"

Recall how a number is represented by x.

Twice a number would be represented as 2x.

Therefore, to represent that twice a number is equal to 50, that would result in the expression: 2x=50

If you're looking to solve this equation, it's often best to think about the "reverse" of the current equation.

Notice how 2 is multiplying the x.

To isolate x, divide that side by 2.

However, recall that whatever is done to one side of an equation must also be done to the other side of the equation. Therefore, you will need to divide both sides by 2.

2x=50

\frac{2x}{2} = \frac{50}{2}

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Solving for x: 25

Hope that helps!

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3 years ago
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aivan3 [116]
I hope this helps you



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6 0
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An electrician charges $40 dollars to come to your house. She also charges $55 for each hour that she works. The electricion cha
Alexxx [7]

Answer:

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What is an integer function?<br>​
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Step-by-step explanation:

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3 years ago
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