Question

Solve the system using matrices. 3x + 4y = 18 3x + 4y = 18



A. (-2, 6)


B. (-2, -6)


C. (6, -2)


D. No solution

Answer 1

\[\left[\begin{matrix}3 & 4 & 18\\ 3 & 4 & 18\end{matrix}\right]\] Using Gauss-Jordan elimination (we subtract first row from second, then simplify the first row so that the row's first entry is 1) we have:\[\left[\begin{matrix}1 & (3/4) & 6 \\ 0 & 0 & 0\end{matrix}\right]\] Since the reduced matrix has a row of zeroes, this indicated that there are infinitely many solutions. We can find all solutions by setting one variable equal to t and expressing the other in terms of that free variable. So let y = t, then x = 6 - (3/4)t,

Answer 2

are you sure the second equation isn't different from the first?

Answer 3

because if it's not, then we can only relate values of x to values of y that will satisfy that equation, in which case there will be infinitely many solutions

Answer 4

I am sure....Solve the system using matrices. 3x + 4y = 18 3x + 4y = 18



A. (-2, 6)


B. (-2, -6)


C. (6, -2)


D. No solution

Answer 5

SO ANSWER IS( -2,6)

Answer 6

If $x$ is a positive number, by how much does $x+10$ exceed $10-x$? Express your answer in terms of $x$.

Answer 7

Another done XD

Answer 8

1. What are some of President Amoto's options for developing industry in South Ga

Answer 9

Two parallel lines are crossed by a transversal.

What is the value of y?
y = 30

Answer 10

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Answer 11

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Answer 12

Can someone read through a writing piece that I have? (It is not finished yet, I simply want some opinions and some help on what I should change, if anythin

Answer 13

Ultrilliam

Answer 14

Ignore this.

Answer 15

Tic Tac Toe

Answer 16

What is the equation of a vertical line passing through (u22125, u22122)?

Answer 17

lamb

Answer 18

I need to verify my email but It's not sending tome. Can anyone help?

Answer 19

Tic Tac Toe

Answer 20

All of the following were reasons why Americans were protesting the Vietnam war except.

Answer 21

The idea that if South Vietnam fell to communism, other nations would soon follow.

Answer 22

United States involvement in the Vietnam War was based in part on a desire to

A. protect American business interests in China

B. contain communism in Southeast Asia

C. prevent renewed Japanese expansionism in the Pacific

D. assure access to an adequate supply of oil from the Middle East

Answer 23

Modern technology did each of the following in Vietnam EXCEPT:

A. make it easier for the American forces to defeat their enemies.

Answer 24

My Kill list
(Roasting)

Answer 25

What did young men burn to protest the war in Vietnam?

A. Barracks at military bases

B.