shineciaames
shineciaames shineciaames
  • 14-08-2016
  • Mathematics
contestada

find the solution to the following system of equations. -2x y=-3 -x 2y=3 answers are a. (3,3) b. (21,-9) c. (0,2) d. (-3,-9)

Respuesta :

nobillionaireNobley
nobillionaireNobley nobillionaireNobley
  • 20-08-2016
-2x + y = -3 . . . . . . (1)
-x + 2y = 3 . . . . . . (2)
From (1), y = 2x - 3 . . . . . (3)
Substituting for y in (2), gives:
-x + 2(2x - 3) = 3
-x + 4x - 6 = 3
3x = 3 + 6 = 9
x = 9/3 = 3

From (3), y = 2(3) - 3 = 6 - 3 = 3

Solution = (3, 3)
Answer Link

Otras preguntas

Why did Richard Nixon resign as president?
Starting in the fifteenth century, leaders in China and Japan decided to cut off contact with other countries. Which was not a reason for doing this? A. They fe
To keep up with demand, how did African slave traders obtain more enslaved people? a.They took prisoners of war and raided villages. b.They stopped selling ensl
how did the changes in agriculture contribute to the development of the shang dynasty
if the moon is a full moon tonight what will be the moon one week later waxing or waning
If you were traveling from Georgia to Arkansas, which direction would you primarily travel?
George wants to put carpeting in a rectangular living room and a square bedroom. The length and width of the living room is 12 feet and 18 feet. One side of the
what is the difference between plucking and abrasion
Mark each statement if it is an advantage of Byzantium's location. A. The bodies of water offered opportunities for easy travel. B. The location made it easier
how do you write 3,516.568 in expanded form