3 years ago

Plot the complex number 5i and find its absolute value

1 answer:

4 0

Check the picture below.

$\bf 5i\implies \stackrel{a}{0}~~\stackrel{b}{+5}i\implies \stackrel{\stackrel{absolute~value}{modulus}}{r=\sqrt{a^2+b^2}}\implies r=\sqrt{0^2+5^2}\implies r=5$

You might be interested in

a wheel has a radius of 20 cm if it rolls 60 cm without slipping, through how many radians has it turned

Lerok [7]

Answer:

Step-by-step explanation:

Arc length = radius × angle

s = r θ

60 cm = 20 cm × θ

θ = 3 radians

3 0

3 years ago

Let F be a field, and suppose a EF, a *0. Prove that a has a unique multiplicative inverse.

bezimeni [28]

Answer with Step-by-step explanation:

Let F be a field .Suppose $a\in F$ and $a\neq 0$

We have to prove that a has unique multiplicative inverse.

Suppose a has two inverses b and c

Then, $ac=1,ab=1$ where 1 =Multiplicative identity

$ac=ab$

$c=b$ (cancel a on both sides)

Hence, a has unique multiplicative inverse.

6 0

3 years ago

Which one is definitely wrong ?

ivanzaharov [21]

D) a.b > 0 is the wrong answer

8 0

3 years ago

Read 2 more answers

Michael has $550 in his savings account he took out $30.75 every month for one year what is the net change in Michael's account

andriy [413]

First You do 30.75 x 12 This is because he said every month for a year and a year has 12 months The answer to 30.75 x 12 is 369 Now all you have to do is 550 - 369 = 181.

Hope this helps :D

6 0

3 years ago

Anyone know the answer to this?

AlladinOne [14]

Answer:

1/8

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers