Multiplying and dividing with conjugate of 2+i in the given expression, we get(3+ 4i)(2-i)/(2+i)(2-i)=(6-3i+8i-4i^2)/(4-i^2)=(10+5i)/(4+1)=(10+5i)/5=2+i=a+bi<span>Thus a=2</span>

7 0

2 years ago

Judy is trying to stack books on a shelf that is 20 inches tall. If each book is 4/5 inches thick, how many

Leviafan [203]

49 because she can stack more ty

5 0

2 years ago

Plzzz helpppppppppppppppop

Aleksandr-060686 [28]

Answer:

the andwer should be c

Step-by-step explanation:

bffeg see dyer hat harm gadget Geffen ht ttfm all all

5 0

3 years ago

For the inverse variation equation Xy = k what is the constant of variation, k, when X = -2 and y =5

denpristay [2]

The constant of variation is: -10

Step-by-step explanation:

The inverse proportion between y and x is given by:

y ∝ 1/x

When the proportionality symbol is removed, the proportionality consatnt is introduced

$y = \frac{k}{x}\\k = xy$

Putting the values of x and y

x = -2

y = 5

$k = -2 * 5\\k = -10$

Hence,

The constant of variation is: -10

Keywords: Proportion, variation

Learn more about variation at:

#LearnwithBrainly

4 0

3 years ago