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Advocard [28]
2 years ago
8

khan academy is giving me only this explanation but won't go into detail and I cannot understand it for the life of me. how do I

know what number to multiply both variables by? what exactly does expanding the parentheses mean? help​

Mathematics
1 answer:
Setler [38]2 years ago
7 0

Answer:

12 - 4i

Step-by-step explanation:

-2i ( 2+6i)

Distribute

-2i * 2 + -2i *6i

-4i - 12 i^2

We know that i^2 = -1 so replace it

-4i - 12(-1)

-4i + 12

Then put in the order a+bi  where the real number comes first and the imaginary number comes last

12 - 4i

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ruslelena [56]
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3 years ago
What is the value of the 8th term of the sequence 4, 8, 16, 32, ...?
vladimir1956 [14]

Answer:

512

Step-by-step explanation:

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3 0
2 years ago
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I<br> -72<br> –54<br> -36<br> y<br> 25<br> 13<br> 1<br> What is the y-intercept of the line?
Allisa [31]

Answer:

  -23

Step-by-step explanation:

As I increases by 18, y decreases by 12. From the last value in the table, I needs to increase by 2·18 for it to become zero. Hence the y-intercept will be 2·12 less than the last value in the table:

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6 0
3 years ago
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Mekhanik [1.2K]
74% is grater hope i helped
4 0
3 years ago
Read 2 more answers
I NEED HELP ASAP!!!!!!!!
andreev551 [17]

Step-by-step explanation:

slope =  \frac{rise}{run}  =  \frac{y2 - y1}{x2 - x1}  \\  =  \frac{ - 7 - 13}{5 - ( - 3)}  \\  =  \frac{ - 20}{8}  \\ =   \frac{ - 2 \times 10}{2 \times 4}  \\  =  \frac{ - 10}{4}  \\  =  \frac{ - 2 \times 5}{ 2  \times 2} =  \frac{5}{2}

7 0
3 years ago
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