3 years ago

Help 8-9 plz!! and also plz explain how to do it with the fractions! I have a test coming up so plz help

Mathematics

1 answer:

Nadya [2.5K]3 years ago

3 0

Don't know I am only 11 years old

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The absolute value of any complex number a + bi is the ___________ from (a, b) to (0, 0) in the complex plane.

Lyrx [107]

Answer:

distance

Step-by-step explanation:

Usually the absolute value of a complex number is called its magnitude. The squared magnitude is the algebraic quantity that's preferable to work with.

Let

$z = a+bi$

$|z|^2 = z^* z = zz^* = |a+bi|^2= (a+bi)(a-bi) = a^2 - i^2 b^2 = a^2+b^2$

$|a+bi| = \sqrt{a^2+b^2}$

That's the distance from the origin to (a,b)

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4 years ago

You went to the mall with $80. You spent 25% of your money on a pair of shorts and 65% of the remainder on sandals. How much did

swat32

25% of 80 is 20
65% of 20 is 13
Your answer is 13

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3 years ago

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Please help will give brainiest to correct answer

lianna [129]

Answer:1

Step-by-step explanation:

4 0

3 years ago

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<img src="https://tex.z-dn.net/?f=5%20%5Csqrt%7B20%7D%20" id="TexFormula1" title="5 \sqrt{20} " alt="5 \sqrt{20} " align="absmid

SOVA2 [1]

Answer:

Step-by-step explanation:

= $5\sqrt{20}$

= $5\sqrt{2^{2}*5 }$

= $5\sqrt{2x^{2} } \sqrt{5}$

=5 * $2\sqrt{5}$

= $10\sqrt{5}$

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3 years ago

Mr. Garcia has 3/4 yard of ribbon to make badges for winners at a side spray uses 1/8 yard of ribbon for each badge how many bad

Anton [14]

Answer:

The total number of badges miss Garcia can make=6

Step-by-step explanation:

Step 1: Express the total length of ribbon

Use the expression below;

R=B×N

where;

R=total length of ribbon Garcia has

B=length per badge

N=number of badges made

In our case;

R=3/4 yard

B=1/8 yard

N=n

replacing;

(3/4)=(1/8)×n

n=(3/4)×8

n=6

The total number of badges miss Garcia can make=6

8 0

4 years ago