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
Gelneren [198K]
3 years ago
5

Please help im so confused

Mathematics
1 answer:
MArishka [77]3 years ago
3 0

Answer:

i

Step-by-step explanation:

i = \sqrt{-1}

i^2 = -1

i^3 = -i

i^4 = 1

(Make sure you know your exponent rules)

i^4^1 = i^4^0 * i = (i^1^0)^4 * i \\i^4 = 1 \\i^1^0 * i *1 \\i^1^0=1\\1*1*i=i

You might be interested in
31,680 ft = mi<br> A. 6 <br> B. 18 <br> C. 60 <br> D. 2,640
Vlad1618 [11]
5280 feet = 1 mile
31,680 feet = x miles

31,680/5,280 = 6

31,680 feet = 6 miles.

Your answer is A. 6.
6 0
2 years ago
Find a recursive formula for the sequence:<br><br> 1, -1, -7, -25
Mumz [18]
<h3>Answer:</h3>

a_n=3a_{n-1}-4

<h3>Step-by-step explanation:</h3>

<em>Try the answers</em>

You can try the answers to see what works. You can expect all of the choices to match the first two terms, so try some farther down. Let's see if we can get -25 from -7.

a) 3*(-7) -4 = -21 -4 = -25 . . . . this one works

b) -7 -2 = -9 . . . . ≠ -25

c) -3(-7) +2 = 21 +2 = 23 . . . . ≠ -25

d) -2(-7) +1 = 14 +1 = 15 . . . . ≠ -25

The formula that works is the first one.

_____

<em>Derive it</em>

All these formulas depend on the previous term only, so we can write equations that show the required relationships. Let the unknown coefficients in our recursion formula be p and q, as in ...

a_n=p\cdot a_{n-1}+q

Then, to get the second term from the first, we have

... 1·p +q = -1

And to get the third term from the second, we have

... -1·p +q = -7

Subtracting the second equation from the first gives ...

... 2p = 6

... p = 3 . . . . . . . this is sufficient to identify the first answer as correct

We can find q from the first equation.

... q = -1 -p = -1 -3 = -4

So, our recursion relation is ...

a_n=3a_{n-1}-4

6 0
3 years ago
(Picture up top) Lines XU and WY intersect at point A. Based on the diagram, determine if the statement is True or False t.
Leokris [45]

Answer: The answer would be B. False. (Please give me a thanks it'll help out a lot.)

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=x%5E%7B2%7D%20%2B%2013x%3D%20-6" id="TexFormula1" title="x^{2} + 13x= -6" alt="x^{2} + 13x= -6
HACTEHA [7]

Answer:

Is that a magic spell??

Step-by-step explanation:

???

6 0
2 years ago
A mine elevator was at a depth of -120 feet. After 15 seconds, the mine elevator was at a depth of -30 feet. Which expression sh
KonstantinChe [14]
-120 + -30 = 90. 90/15 = 6
Answer ; 6mph
8 0
3 years ago
Other questions:
  • -100,-200,0,-25,30 in order from least to greatest
    5·2 answers
  • If cos theta = 0.5, find sec theta. A. 0.25 B. 0.5 C. 1 D. 2
    14·1 answer
  • Pls help me with A and B​
    6·1 answer
  • What change between the primate and the image​
    5·1 answer
  • <img src="https://tex.z-dn.net/?f=3x-4%3D14%5C%5C" id="TexFormula1" title="3x-4=14\\" alt="3x-4=14\\" align="absmiddle" class="l
    14·2 answers
  • Will give brainliest
    15·1 answer
  • Why do we call real solutions zeros?
    7·2 answers
  • Solve the equation a+b+c=180 for c
    9·1 answer
  • What is -40+7r=-5(8+5r)
    10·1 answer
  • Pls help. Me I need sum help y’all
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!