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3 years ago

5

What power do I need to raise both sides of the following equation to? x^4=81

1 answer:

LenKa [72]3 years ago

3 0

Answer:

Rise it to 2

( x ^2 ) ^2 − 9 ^2 = 0

Step-by-step explanation:

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Find the product of z1 and z2, where z1 = 7(cos 40° + i sin 40°) and z2 = 6(cos 145° + i sin 145°).

Oduvanchick [21]

For two complex numbers $z_1=re^{i\theta}=r(\cos\theta+i\sin\theta)$ and $z_2=se^{i\varphi}=s(\cos\varphi+i\sin\varphi)$ , the product is

$z_1z_2=rse^{i(\theta+\varphi)}=rs(\cos(\theta+\varphi)+i\sin(\theta+\varphi))$

That is, you multiply the moduli and add the arguments. You have $z_1=7e^{i40^\circ}$ and $z_2=6e^{i145^\circ}$ , so the product is

$z_1z_2=7\times6(\cos(40^\circ+145^\circ)+i\sin(40^\circ+145^\circ)=42(\cos185^\circ+i\sin185^\circ)=42e^{i185^\circ}$

3 0

3 years ago

Read 2 more answers

Do the table and the equation represent the<br> same function?<br> y = 390 + 11(x)

Aneli [31]

Answer:

NO

Step-by-step explanation:

Try to replace x by -50
y= 390 + 11*(-50) = -160
in the table we have -210 so the table doesn't represent the equation

5 0

3 years ago

What number must be added to 15,-6, and 12 to have a mean of 5? Explain.

Genrish500 [490]

You need to add a -1

We can find this by setting up the equation like so

x + (-6) + 12 + 15 / 4 = 5

x + 21 = 20

x = 20 -21

x = -1

Now if we insert -1 where x is located in the equation, you will get a means of 5

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3 years ago

A geologist digs 5 feet down into the ground before taking a break. This process is repeated 3 times to create a hole that has a

Nikitich [7]

The answer to the problem is D.

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3 years ago

The Radius of Joe's large pizza is 9.5 inches. What is the approximate area of the large pizza? Use 3.14 for n

podryga [215]

9.5x3.14=29.83
n=29.83
This should be the correct answer if it is make me the brainiest please

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3 years ago