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3 years ago

Divide the following complex numbers: (4-i)/(3+4i) ??

Mathematics

1 answer:

frez [133]3 years ago

3 0

The answer is $\frac{8}{25} -i\frac{19}{25}$

Steps: (<em>in the attachment</em>)↓↓↓↓↓

<em>Hope this helps!!</em>

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PLEASE HELP ASAP WILLL MARK BRANLIEST TO WHOEVER ANSWERS CORRECTLY FIRST 20 PTS

DedPeter [7]

Answer:

Step-by-step explanation:

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4 years ago

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What is the equation of the line written in general form

Vesnalui [34]

Answer:

y = -x + 2.

x + y - 2 = 0 (Standard form).

Step-by-step explanation:

Its slope (m) is -1 and y intercept (c) is at y = 2.

y = mx + c

So it's:

y = -1x + 2

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2 years ago

Given f(x) = 2x^2 -3x and g(x) = x+4

Alenkasestr [34]

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2x³ + 5x² - 12x

Step-by-step explanation:

The correct answer doesn't seem to be listed...

(fg)(x) = (2x² - 3x)(x + 4)

Which equals...

2x²(x) + 2x²(4) + (-3x)(x) + (-3x)(4)

Which simplifies to...

2x³ + 8x² - 3x² - 12x

2x³ + 5x² - 12x

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3 years ago

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Let f(x)=-6x+3 And g(x)=5x+4 Find F×G and state it's domain

a_sh-v [17]

Answer:b

Step-by-step explanation:

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3 years ago

Assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard deviation of 20. Find the prob

Ipatiy [6.2K]

Answer:

Randomly selected adult has an IQ less than 136 is 0.9641

Step-by-step explanation:

It is given that, it is normal distribution with mean 100 and SD as 20.

So, let's use the formula of z-score

z= $\frac{x-mean}{SD}$

For this problem,

x= 136

Plug in this value into the formula

z-score= $\frac{136-100}{20}$

=1.8

Now, use z-score table to find the probability

Find the corresponding value for the row 1.8 and the column 0.00, we do get 0.9641

So, Randomly selected adult has an IQ less than 136 is 0.9641

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3 years ago