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
Shalnov [3]
3 years ago
6

Simplify i^38 1) i 2) -1 3) -i 4) 1

Mathematics
2 answers:
alexdok [17]3 years ago
7 0
The awnser is supposed to be -1
Nataly_w [17]3 years ago
5 0

the answer is number 2.

- 1

You might be interested in
Y=4x+8forx <br> Thank you if you can answer
yKpoI14uk [10]

Answer:

y=4x-8. y=4x−8 y = 4 x -

Step-by-step explanation:

I think is it

7 0
2 years ago
Read 2 more answers
The next number in the arithmetic sequence 10,23,36,? Is
rjkz [21]
It would be 49
10+13=23
23+13=36
36+13=49
I think this is right
6 0
3 years ago
Determine if the columns of the matrix form a linearly independent set. Justify your answer. [Start 3 By 4 Matrix 1st Row 1st Co
Volgvan

Answer:

Linearly Dependent for not all scalars are null.

Step-by-step explanation:

Hi there!

1)When we have vectors like v_{1},v_{2},v_{3}, ... we call them linearly dependent if we have scalars a_{1},a_{2},a_{3},... as scalar coefficients of those vectors, and not all are null and their sum is equal to zero.

a_{1}\vec{v_{1}}+a_{2}\vec{v_{2}}+a_{3}\vec{v_{3}}+...a_{m}\vec{v_{m}}=0  

When all scalar coefficients are equal to zero, we can call them linearly independent

2)  Now let's examine the Matrix given:

\begin{bmatrix}1 &-2  &2  &3 \\ -2 & 4 & -4 &3 \\ 0&1  &-1  & 4\end{bmatrix}

So each column of this Matrix is a vector. So we can write them as:

\vec{v_{1}}=\left \langle 1,-2,1 \right \rangle,\vec{v_{2}}=\left \langle -2,4,-1 \right \rangle,\vec{v_{3}}=\left \langle 2,-4,4 \right \rangle\vec{v_{4}}=\left \langle 3,3,4 \right \rangle Or

Now let's rewrite it as a system of equations:

a_{1}\begin{bmatrix}1\\ -2\\ 0\end{bmatrix}+a_{2}\begin{bmatrix}-2\\ 4\\ 1\end{bmatrix}+a_{3}\begin{bmatrix}2\\ -4\\ -1\end{bmatrix}+a_{4}\begin{bmatrix}3\\ 3\\ 4\end{bmatrix}=\begin{bmatrix}0\\ 0\\ 0\end{bmatrix}

2.1) Since we want to try whether they are linearly independent, or dependent we'll rewrite as a Linear system so that we can find their scalar coefficients, whether all or not all are null.

Using the Gaussian Elimination Method, augmenting the matrix, then proceeding the calculations, we can see that not all scalars are equal to zero. Then it is Linearly Dependent.

 \left ( \left.\begin{matrix}1 &-2  &2  &3 \\ -2 &4  &-4  &3 \\ 0 & 1 &-1  &4 \\ \end{matrix}\right|\begin{matrix}0\\ 0\\ 0\end{matrix} \right )R_{1}\times2 +R_{2}\rightarrow R_{2}\left ( \left.\begin{matrix}1 &-2  &2  &3 \\ 0 &0 &9  &0\\ 0 & 1 &-1  &4 \\ \end{matrix}\right|\begin{matrix}0\\ 0\\ 0\end{matrix} \right )\ R_{2}\Leftrightarrow  R_{3}\left ( \left.\begin{matrix}1 &-2  &2  &3 \\ 0 &1  &-1  &4 \\ 0 &0 &9  &0 \\ \end{matrix}\right|\begin{matrix}0\\ 0\\ 0\end{matrix} \right )\left\{\begin{matrix}1a_{1} &-2a_{2}  &+2a_{3}  &+3a_{4}  &=0 \\  &1a_{2}  &-1a_{3} &+4a_{4}  &=0 \\  &  &  &9a_{4}  &=0 \end{matrix}\right.\Rightarrow a_{1}=0, a_{2}=a_{3},a_{4}=0

S=\begin{bmatrix}0\\ a_{3}\\ a_{3}\\ 0\end{bmatrix}

3 0
3 years ago
A salesman who makes $32,500 a year gets promoted to sales manager, earning a new salary of $43,250. What was the rate of increa
OLEGan [10]

Answer:

33.1%

Step-by-step explanation:

First, calculate the dollar amount of the increase.  Subtract $32,500 from $43,250.  We get $10,750.

Next, divide this $10,750 by the original salary, $32,500, to determine what fraction of $32,500 is represented by $10,750:

fraction = $10,750/$32.500 = 0.331

Convert this to a percentage by multiplication by 100%:  33.1%

The rate of increase of the saleperson's salary was 33.1%.

8 0
2 years ago
A bag of chocolate mix weighed 1/4 of a kilogram could make enough brownies to feed 1/7 of the students at school how many bags
Hoochie [10]
A "whole" will be 7/7, or just 1 whole.

so we know one bag can do 1/7 of all students, how many will it be needed to do 7/7?

well, in 7/7 there are seven 7/7, so, 7 bags then, or one could say,

\bf \begin{array}{ccll}&#10;\stackrel{chocolate}{bag}&\stackrel{fraction}{students}\\&#10;\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\&#10;1&\frac{1}{7}\\\\&#10;x&\frac{7}{7}&#10;\end{array}\implies \cfrac{1}{x}=\cfrac{\quad \frac{1}{7}\quad }{\frac{7}{7}}\implies \cfrac{1}{x}=\cfrac{1}{7}\cdot \cfrac{7}{7}&#10;\\\\\\&#10;\cfrac{1}{x}=\cfrac{1}{7}\implies 7=x
5 0
2 years ago
Other questions:
  • What is the length of MN?<br> 58 cm<br> 75 cm<br> 88 cm<br> 116 cm
    5·1 answer
  • Monique has 2 artificial Christmas trees in her apartment. The taller tree is 1 foot shorter than 5 times the height of the smal
    9·1 answer
  • Bill weighs 150 lbs. He wants to gain 2 lbs per week for football season. Jamal runs track. He wants to lose weight so he can ru
    8·2 answers
  • Find the absolute maximum and absolute minimum values of f on the given interval.
    9·1 answer
  • Free points!!! <br> Answer your favorite color for 20 points
    14·2 answers
  • A medical device company knows that the percentage of patients experiencing injection-site reactions with the current needle is
    8·1 answer
  • PLEASE HELP, MARKING BRAINLIEST!!!<br><br> What is the surface area of the prism?
    7·1 answer
  • It’s math I suck at it please help
    9·2 answers
  • A 2 -gallon container of window costs 31.36. what is the price per cup
    10·1 answer
  • f(x)=−7x 2 +8x+2f, left parenthesis, x, right parenthesis, equals, minus, 7, x, squared, plus, 8, x, plus, 2 What is the value o
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!