Answer:77
Just multiply the numbers
7/13 * 143
= (7*143)/13
= 1001/13
= 77
So the answer is 77
2,600 is the answer to your question
Answer:
Step-by-step explanation:
91 - n = 20
-91 -91
-n = - 71
the n is negative so there is a negative one there so we have to divide by negative one by both sides
so you get positive 71
so n = 71
Answer:
third option
Step-by-step explanation:
Using De Moivre's theorem
(
+ i)³ , then
|
+ i |
= ![\sqrt{(\sqrt{3})^2+1^2 }](https://tex.z-dn.net/?f=%5Csqrt%7B%28%5Csqrt%7B3%7D%29%5E2%2B1%5E2%20%7D)
=
=
= 2
arg(
+ i) =
(
) = ![\frac{\pi }{6}](https://tex.z-dn.net/?f=%5Cfrac%7B%5Cpi%20%7D%7B6%7D)
Thus
(
+ i)³
= 2³ [ cos(3 ×
) + isin( 3 ×
) ]
= 8 [ cos(
) + isin(
) ]