magkatgirl123 magkatgirl123

21-10-2020
Mathematics

contestada

Solve the system by using a matrix equation.
6x-9y= 3
3x-4y=7
a. (17,11)
b. (12, 14)
c. (18, 12)
d. (15, 10

Respuesta :

cjf7nb2y9j cjf7nb2y9j

21-10-2020

|6 -9 3|
|3 -4 7|

Apply to Row2 : Row2 - 1/2, Row1
|6 -9 3|
|0 1/2 11/2|

3 Simplify rows.
|6 -9 3|
|0 1 11|

Apply to Row1 : Row1 + 9 Row2.
|6 0 102|
|0 1 11|

5 Simplify rows.
|1 0 17|
|0 1 11|

Answer:
X= 17
Y=11

x=17
y=11

Answer Link

Otras preguntas

Choose the equation of the horizontal line that passes through the point (-8,-7),

Simplify the expression as much as possible. sin(2x)cos(x)

What is the difference between meiosis and mitosis?

is it possible to have congruent angles created by complementary angles

Choose the equation of the horizontal line that passes through the point (-8,-7),

In a state, license plates consist of four letters and two digits. How many different plates are possible?

P is inversely proportional to Q. When P=100, Q=32 Calculate the value of Q when P is twice as big as Q. Show your working please

The ancient Chinese were eager to share the art of silk production with other cultures. A. True B. False meadel

What led Adolfo hittler to order German submarines to attack American ships?

What's the subject of the sentence My Uncle is always eating peanut-butter sandwiches.