3 years ago

Please help with number one.

Mathematics

1 answer:

jek_recluse [69]3 years ago

3 0

Answer:

yo mom

yo mom yo mom

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Given w = 1 + i, what is arg (w) and |w|? Explain how you got your answer.

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arg (w)=π/4 and |w|=√2

Step-by-step explanation:

If z= x+iy is a complex number, then |z| is given by √ ( x²+y² ).

And the argument (z) is given by Ф = tan⁻¹ ( y/x ) where -π < x < π.

Now, in our case w= 1+i i.e. x=1 and y=1.

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A hair salon increased their prices by 10%. if a haircut was originally $20,what is the new price?

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Answer:

Step-by-step explanation:

new price = original price + increase

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3 years ago

1.) In a department store, a $120 belt is marked 25% off.

lawyer [7]

Answer:

$30

$90

Step-by-step explanation:

Given parameters:

Selling price of belt = $120

Percentage discount = 25%

Unknown:

Discount = ?

Sale price of the dress = ?

Solution:

Discount is a reduction in the price of a commodity.

Discount = percentage discount x selling price of belt

Input the parameters and solve;

I. Discount = $\frac{25}{100}$ x 120 = $30

II. Sale price of the dress;

= selling price - discount amount

= $120 - $30

= $90

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