Solve using matrix inverse method 3x 2y 3x-2y+3z=8 , 2x+ y - z = 1, 4x-3y + 2z =4

Mathematics

1 answer:

emmainna [20.7K]2 years ago

7 0

Step-by-step explanation:

A=⎣⎢⎢⎡324−21−33−12⎦⎥⎥⎤,x=⎣⎢⎢⎡xyz⎦⎥⎥⎤,B=⎣⎢⎢⎡814⎦⎥⎥⎤

∣A∣=⎣⎢⎢⎡324−21−33−12⎦⎥⎥⎤

=3[1−3−12]−1(−2)[24−12]+3[241−3]⇒3(2−3)−2(4+4)+

You might be interested in

What would be the answer to this?

Eddi Din [679]

Answer:

If you are looking for x it equals 80 degrees

Step-by-step explanation:

vertical angles are congruent

7 0

2 years ago

A book sold 31,700 copies in its first month of release. Suppose this represents 8.8% of the number of copies sold to date. How

elena-14-01-66 [18.8K]

For this case we propose a rule of three:

31700 ------------> 8.8%

x ----------------------> 100%

Where "x" represents the number of copies sold to date.

$x = \frac {100 * 31700} {8.8}\\x = \frac {3170000} {8.8}\\x = 360,227.273$

Thus, to date 360,227 copies of the book have been sold.

ANswer:

To date, 360,227 copies of the book have been sold.

8 0

3 years ago

the school that imani goes to is selling tickets to a spring musical. on the first day of ticket sales the school sold 8 adult t

9966 [12]

If we let x and y represent the prices of adult and child tickets, respectively, then we can write two equations based on the daily sales.
8x +5y = 108
x +14y = 67

A graphing calculator shows the solution of these equations to be
(x, y) = (11, 4)

The price of an adult ticket is $11.
The price of a child ticket is $4.