3 years ago

Help on complex numbers

1 answer:

4 0

1) 1/6i=-6i
2) - (-4+5i)=4-5i
3) 1/(2+i)=(2-i)/(4+1) = (2-i)/5
4)1/(-3+5i)=(-3-5i)/(9+25)
5) square root of ( 5*5 + 12*12) = 13

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Svet_ta [14]

Answer:

I think is 2/9 but I may be wrong

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3 years ago

In the figure below,S is between Q and T and R is the midpoint of QS. If RS=4 And RT= 12 find QT

Oxana [17]

Qt = 16.

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4 years ago

3x = 27

lawyer [7]

Answer:

Step-by-step explanation:

Since you are trying to make x on its own, you are trying to get rid of the co-efficient. The co-efficient is three, so you divide 3 by 3, which would equal one, leaving x on its own. Whatever you do to one side you do to the other, so you would divide 27 by 3 as well.

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3 years ago

Read 2 more answers

Is this a true statement X^2=1 if and only if x=1 or x=-1

Stells [14]

Answer:

yes the statement is true

Step-by-step explanation:

if you plug in 1^2 you are just multiplying 1 by its self

4 0

3 years ago