25-11-2014
Mathematics

contestada

Which ordered pair is the solution to the system of equations?
2x+y=-8
x-y=-4
A) (-3,-2)
B) (-1,3)
C) (1,5)
D) (-4,0)

Respuesta :

25-11-2014

[tex] \left \{ {{2x+y=-8} \atop {x-y=-4}} \right. \\+----\\\\3x=-12\ \ \ \ |:3\\x=-4\\\\-4-y=-4\\-4+4=y\\y=0\\\\Answer\ D(-4,0)[/tex]

Answer Link

Otras preguntas

Enter the value of p so the expression 5/6 - 1/3n is equivalent to p(5-2n).

Make c the subject: x=-b+(b²-4ac) divided by 2a The brackets mean square root

what is the point of view of excerpt from mr.revere and I

a soccer ball is kicked from 3 feet above the ground. the height,h, in feet of the ball after t seconds is given by the function h=-16t^2+64t+3 find the time it

Which plant structure is the dominant sporophyte of angiosperms?

The number, 6.022 x 1023 is known as a ___.

What was the purpose of the bank holiday?

cual es la mitad de 17

What relationship in the ecosystem is the following; 1) A bacteria causes your throat to be sore 2) A mountain lion stalks a young deer

(MC)Which statement describes the short-term consequences of the end of World War I? AThe United States was hit by a brief recession. b Widespread strikes wer