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kkurt [141]
3 years ago
15

Plzzzzzzzzzzzzzzzzzzzzzzz

Mathematics
1 answer:
NNADVOKAT [17]3 years ago
7 0

Answer:

18x to the power of 2 -15x+2

Step-by-step explanation:

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Perform the indicated operation and express the result as a simplified complex number. I need help with 35
skelet666 [1.2K]

Given:-

\frac{3+4i}{2-i}

To find:-

The simplified form.

At first we take conjucate and multiply below and above.

The conjucate is,

2+i

So now we multiply. we get,

\frac{3+4i}{2-i}\times\frac{2+i}{2+i}

Now we simplify. so we get,

\frac{3+4i}{2-i}\times\frac{2+i}{2+i}=\frac{6+3i+8i+4(i)^2}{2^2-i^2}

We know the value of,

i^2=-1

Substituting the value -1. we get,

\begin{gathered} \frac{6+3i+8i+4(i)^2}{2^2-i^2}=\frac{6+3i+8i+4(-1)_{}^{}}{2^2-(-1)^{}} \\ \text{                               =}\frac{6-4+11i}{2+1} \\ \text{                              =}\frac{2+11i}{3} \end{gathered}

So now we split the term to bring it into the form a+ib. so we get,

\frac{2+11i}{3}=\frac{2}{3}+i\frac{11}{3}

So the required solution is,

\frac{2}{3}+i\frac{11}{3}

3 0
1 year ago
The volume of a cylinder is 225π cm³ and its height is 9 cm.
Oksana_A [137]

Answer:

5cm

Step-by-step explanation:

Given data

volume = 225π cm³

Height= 9cm

r= ???

Volume of cylinder

v=πr^2h

substitute

225π= π*r^2*9

225= r^2*9

r^2= 225/9

r^2= 25

r= √25

r= 5cm

Hence the radius is 5cm

8 0
3 years ago
Write an equation of the line that passes through the points. (−3, 0), (0, 0) y=
mafiozo [28]

Answer:

y = 0

Step-by-step explanation:

y = mx + c

M is taken as gradient.

Gradient is equals y difference ÷ x

difference

Y difference = 0

X difference = 0 - (-3) = 3

Hence the gradient here is 0

Let us take the co ordinates (0,0) (you can take any of the coordinates given)

Substitute the equation:

y = mx + c

0 = 0×0 + c

C = 0

Hence y = 0 is the answer

So hence the values of y co ordinates lie on 0

I hope this was the right answer and it helped you

8 0
3 years ago
What is 284,028 in word form?
Gelneren [198K]
Two hundred eighty-four thousand, twenty-eight.
8 0
3 years ago
Read 2 more answers
Which number represents 778,332 rounded to the nearest thousand?
Thepotemich [5.8K]
Best answer is A, 778,000.
4 0
4 years ago
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