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Brums [2.3K]
3 years ago
14

What is the polar form of z?

Mathematics
2 answers:
Sergeeva-Olga [200]3 years ago
8 0

Answer:

D.

Step-by-step explanation:

Edge

sasho [114]3 years ago
5 0

Answer: 1 z in polar form

The polar form of a complex number z=a+bi is z=r(cosθ+isinθ) , where r=|z|=√a2+b2 , a=rcosθ and b=rsinθ , and θ=tan−1(ba) for a>0 and θ=tan−1(ba)+π or θ=tan−1(ba)+180° for a<0 . Example: Express the complex number in polar form.

Step-by-step explanation:

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The area of a rectangle is 72 cm square. The length of the rectangle is 6 cm longer than the width. What is the width of the rec
miskamm [114]

The correct option will be :  B) 6 cm.

<u><em>Explanation</em></u>

Suppose, the width of the rectangle is x cm.

As, the length is 6 cm longer than the width, so the length will be: (x+6) cm.

<u>Formula for the Area of rectangle</u> is: (Length)*(Width)

Given that, the area of a rectangle is 72 cm²

So....

x(x+6)=72\\ \\ x^2+6x-72=0\\ \\ (x+12)(x-6)=0

Using zero-product property, we will get...

x+12=0\\ x= -12 <em>(Negative value is ignored as width can't be negative)</em>

and

x-6=0\\ x=6

So, the width of the rectangle is 6 cm.

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3 years ago
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Step-by-step explanation:

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6 0
2 years ago
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What have I done wrong and where please help me
lys-0071 [83]
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answer:

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(6 to the power of 3 times 3 to the power of 3) to the power of 2
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Answer:

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Step-by-step explanation:

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