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Naya [18.7K]
3 years ago
14

Find each complex conjugate of 9i

Mathematics
1 answer:
gregori [183]3 years ago
7 0

Answer:

-9i

Step-by-step explanation:

the complex conjugate of a+bi  is  a-bi

0+9i  is 0-9i


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8. The sum of two numbers is 8 less than twice the first number. Their difference is 4 less than twice
Delicious77 [7]

Answer:

14 and 6

Step-by-step explanation:

Let's start by naming the first number x.

We can name the second number y.

We can set up equations to model our situation.

x+y=2x-8

x-y=2y-4

Let's simplify the equations.

x+y=2x-8

Subtract 2x from both sides

-x+y=-8

__________

x-y=2y-4

Subtract 2y from both sides.

x-3y=-4

Add the two equations together to eliminate x.

x-3y=-4

-x+y=-8

________

0x-2y=-12

-2y=-12

Divide both sides by -2.

y=6

The second number is 6.

Plug that back in.

x+6=2x-8

Subtract x from both sides

6=x-8

Add 8 to both sides

x=14

The first number is 14

7 0
3 years ago
Determine the # of rollovers and total cost # of rollovers
miv72 [106K]

Answer:

7747747474774774u4774748 answer

7 0
2 years ago
Please solve as fast as possible...<br>No spams please......​
lisabon 2012 [21]

Answer:

In ∆ABD and ∆ACD

<BAD =<CAD ( each are half of <A )

<D=<D ( each equal to 90°)

AD = AD ( common)

So ∆ ABD is congruent to ∆ ACD.

Then AB =AC (by C.P.C.T)

Hence,∆ABC is an iso - sceles triangle.

8 0
3 years ago
Help with question number one please
coldgirl [10]

Answer:

165 hits

Step-by-step explanation:

27.5% of 600 is 600 x 27.5 / 100 = 165

4 0
2 years ago
What is 379.94 rounded to nearest tenth
never [62]
379.94 rounded to the nearest tenth is = 379.9
3 0
3 years ago
Read 2 more answers
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