Please help!!!! i don't know....

Divide. a.1 − 2i/2i b. 5 − 2i/5 + 2i c.√3 − 2i/−2 − √3i

Umnica [9.8K]

Answer:

(a) \frac{-1i}{2}-1[/tex]

(b) $\frac{20i+21}{29}$

(c) i

Step-by-step explanation:

We have to perform division

(a) $\frac{1-2i}{2i}$

So after division

$\frac{1-2i}{2i}=\frac{1}{2i}-\frac{2i}{2i}=\frac{-1i}{2}-1$

(b) We have given expression $\frac{5-2i}{5+2i}$

After rationalizing $\frac{5-2i}{5+2i}\times \frac{5-2i}{5-2i}=\frac{(5-2i)^2}{25+4}=\frac{25+4i^2+20i}{29}=\frac{20i+21}{29}$

(c) We have given expression $\frac{\sqrt{3}-2i}{-2-\sqrt{3i}}$

After rationalizing

$\frac{\sqrt{3}-2i}{-2-\sqrt{3i}}\times \frac{-2+\sqrt{3i}}{-2+\sqrt{3i}}=\frac{-2\sqrt{3}+7i+2\sqrt{3}}{7}=\frac{7i}{7}=i$

5 0

3 years ago

If logarithm of 5832 be 6, Find thw base?

Lunna [17]

Answer:

3sqrt(2) ................

6 0

2 years ago

HIGH POINTS AND BRIANLIEST TO THE CORRECT ANSWERS PLEASE!!!!! Look at the picture

Anna [14]

Answer: ALL ANSWERS BELOW

1.) 1:4 ratio

2.) 100

3.) 125

4.) perimeter multiplied by 4 for every 1 toothpick as side length. + Side length always smaller than perimeter.

Plz award Brainlist and i hope this helps!! :)

3 0

2 years ago

Solve the system of equations by substitution. y=5x-13 5x+2y=19

Assoli18 [71]

x=3‌‌ and ‌‌y=2 to check use the first equation y=5x-13 you plug in x which is 3 5 times 3 equals 15 15-13 equals 2 y=2

8 0

3 years ago

One number is 16 more than a second number. The sum of the first number and twice the second number is 139. What is the answer ?

Nezavi [6.7K]

Answer first number = 57 second number = 41
x= 16 + y
x + 2y = 139

16+ y + 2y =139
16 + 3y =139
16-16 +3y = 139-16
3y = 123
3/3y = 123/3
y= 41

x= 16+y
x = 16+41
x= 57

4 0

2 years ago

Please help!!!! i don't know....​

Please help!!!! i don't know....