michelle202 michelle202
  • 02-02-2018
  • Mathematics
contestada

How do you solve these systems by elimination level 3

How do you solve these systems by elimination level 3 class=

Respuesta :

anchitthawi
anchitthawi anchitthawi
  • 02-02-2018
x+y = -3 ---(1)
5x-2y = -50 ---(2)

5x+5y = -15 ---(3) (multiplied (1) by 5)
5y-(-2y) = -15-(-50) ((3)-(2))
7y = 35
so y = 5

then x+5 = -3
so x = -3-5 = -8
Answer Link

Otras preguntas

the recursive rule is a1=__and a n-1 for n> __.the explicit rule is a n= ___(__)n-1
find the area of the triangle given: b=6ft A=20° C=110°
A cube 6.0 cm on each side is made of a metal alloy. After you drill a cylindrical hole 2.5 cm in diameter all the way through and perpendicular to one face, yo
how do I solve this linear equations by substitution x=5 x + y = 4
Simplify the expression.3x 648x448OA. 18942 $3x2y2O B. 189272 3ry?Oc. 18x272 2xy2OD. 9327 32x32ResetNext
Solve the following(1) 8(11 + 2r) = 12(4/3 r + 22/3)(2) -8(10 + 7k) + 8k = 9 + 4(6 - 12k)
1. What value of x=? makes therelation not a function?2 12HRUL00-A) -5B) 0C) 4D) 6(MGSE9-12.F.IF.1) Understand Functions
Solve: 9/14 + 2/6 = ?
Solve this inequalityPlease be quick I only have one hour to finish and I still have a bunch of more questions
you have entered a 134-mile biathlon that consists of a run and a bicycle race. During your run, your average velocity is 6 miles per hour, and during your bicy