BaiC4ibscarrer BaiC4ibscarrer
  • 24-11-2016
  • Mathematics
contestada

PLEASE HELP? SERIOUSLY? :)

Solve 2x + 5y = -133x - 4y = -8

(4, 1)

(-4, 1)

(4, -1)

(-4, -1)

Respuesta :

nobillionaireNobley
nobillionaireNobley nobillionaireNobley
  • 25-11-2016
2x + 5y = -8 . . . (1)
-133x - 4y = -8 . . . (2)

(1) * 4 => 8x + 20y = -32 . . . (3)
(2) * -5 => -665x + 20y = 32 . . . (4)

(3) - (4) => 673x = 0
x = 0
From (1), 2(0) + 5y = -8
5y = -8
y = -8/5
Answer Link

Otras preguntas

what did hamilton fear would happen if the proposed constitutuion was not adopted
Twelve cows produce 224,988 pounds of milk. Find the unit rate in pounds per cow.
Louann and Carla received equal scores on a test made up of multiple choice questions and an essay. Louann got 14 multiple choice questions correct and received
What times what equals 154
which nation is considered part of northern and western Europe? Austria, Norway, Greece or Portugal
Which city was divided into 2 different zones one communist & one non-communist A:Berlin,B:Moscow,C:Prague,D:Warsaw
What is 5.8 × 106 mg/s in grams per minute?
Which number is a factor of 10 but not a multiple of 5?
What 378 rounded tip the nearest hundred
1/3 cup of flour is used to make 5 dinner rolls. How many cups of flour are needed to make 3 dozen roll?