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lions [1.4K]
4 years ago
14

Find the error in this problem.

Mathematics
1 answer:
SpyIntel [72]4 years ago
4 0

I believe it is that your supposed to add the roots before finding the square root

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Convert the complex number z = -12 + 5i from rectangular form to polar form.​
Paha777 [63]

Answer:

z=13(\cos 157\degree +i\sin157\degree)

Step-by-step explanation:

The given complex number is

z=-12+5i

The polar form of this complex number is;

z=r(\cos \theta +i\sin \theta), where

r=\sqrt{(-12)^2+5^2}

r=\sqrt{144+25}=\sqrt{169}=13

and

\theta =\tan^{-1}(\frac{5}{-12})

This implies that;

\theta=157\degree to the nearest degree.

Hence the polar form is

z=13(\cos 157\degree +i\sin157\degree)

7 0
4 years ago
Can you help me on this ?
barxatty [35]

Answer:

what one?

Step-by-step explanation:

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3 years ago
What is the fixed amount charged
Alenkinab [10]

The correct answer is 3) $15

It seems that the first row was before the fixed amount was charged.

Days 1 and 2 are in a constant change of 1x and 15y.

8 0
3 years ago
Hal earns $5 a week doing chores for his parents. He also earns $10 a week for each dog, d, he walks
ZanzabumX [31]

Answer:

Step-by-step ex

5 0
3 years ago
Evaluate √x^2 − y^2 when x^2 =33 and y^2 =15
Andre45 [30]

Answer:

3√2

Step-by-step explanation:

In this question, we are asked to get the value of √ ( x²-y² ), while the value of x² and y² are given to be 33 and 15 respectively.

Hence, x² =33 and y² = 15.  

Putting the values of x² and y² in the above expression we get,

√ ( x²-y² ) = √ ( 33-15) = √18 =3√2. (Answer)

3 0
3 years ago
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