1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
antoniya [11.8K]
3 years ago
13

What is - 4i ^ 19, simplify

Mathematics
1 answer:
german3 years ago
7 0

Answer:

"i"

Step-by-step explanation:

i =\sqrt{-1} \\i^{2}= -1\\\\i^{3}= -i\\\\i^{4}= 1\\\\i^{5}= i\\

the cycle repeats every 4

19/4 = 4.75

16 is divisible by 4 plus three more

thus  i^{19} = -i  but you problem has a minus in front  so "i"

You might be interested in
<img src="https://tex.z-dn.net/?f=I%20%3D%20%5Cfrac%7BE%7D%7B%20%5Csqrt%7BR%20%7B%7D%5E%7B2%7D%20%2B%20W%20%7B%7D%5E%7B2%7D%20L%
AleksandrR [38]

Answer:

R = sqrt[(IWL)^2/(E^2 - I^2)] or R = -sqrt[(IWL)^2/(E^2 - I^2)]

Step-by-step explanation:

Squaring both sides of equation:

     I^2 = (ER)^2/(R^2 + (WL)^2)

<=>(ER)^2 = (I^2)*(R^2 + (WL)^2)

<=>(ER)^2 - (IR)^2 = (IWL)^2

<=> R^2(E^2 - I^2) = (IWL)^2

<=> R^2 = (IWL)^2/(E^2 - I^2)

<=> R = sqrt[(IWL)^2/(E^2 - I^2)] or R = -sqrt[(IWL)^2/(E^2 - I^2)]

Hope this helps!

7 0
3 years ago
Karen has 6 more than twice as many newspaper customers as when she started selling newspapers. She now has 98 customers. How ma
Black_prince [1.1K]

Answer:

46 customers

Step-by-step explanation:

If the number of original customers is n, we can write the following equation:

98 = 2n + 6

92 = 2n

46 = n

5 0
3 years ago
Which equation would you use to find x?
Nitella [24]
You would use B to find X
8 0
3 years ago
How to unscramble this word nioarlta
Zielflug [23.3K]
Since this is in the Mathematics subject my best answer would be Rational.
6 0
3 years ago
Simplify (x^-5) (x^2)*​
Pani-rosa [81]

Answer:

1/x^3

Step-by-step explanation:

foil method

6 0
3 years ago
Other questions:
  • . The perimeter of a rectangle is the sum of all the sides. If you were to walk around a football field whose length is 360 feet
    6·1 answer
  • What's the linear function for this
    11·1 answer
  • A company says its premium mixture of nuts contains 13​% Brazil​ nuts, 19​% ​cashews, 17​% ​almonds, and 8​% ​hazelnuts, and the
    13·1 answer
  • Help me pleas i dont get it
    15·2 answers
  • Describe the relationship between n and 4 that will make the value of the expression 7x n/4 greater than 7
    5·1 answer
  • 1.792 x 10^11<br><br> What’s the answer?
    12·1 answer
  • The map below shows the length of a proposed land bridge at Phil Hardberger Park. The length of the land bridge is represented b
    12·1 answer
  • I need help with this If right
    6·2 answers
  • The perimeter of a rectangle is 56 inches. The length is 4 more than twice the width. Write and solve a system to determine the
    9·2 answers
  • Help ill Mark brainlist :)
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!