sam64534 sam64534
  • 23-04-2022
  • Mathematics
contestada

Solve using elimination. 3х + 8y = -2 and -3х – бу = -6​

Respuesta :

amelieoconnor amelieoconnor
  • 23-04-2022

Answer:

  • x=10
  • y= -4

Step-by-step explanation:

  • Simultaneous equations
  • 3х + 8y = -2
  • -3х – 6у = -6​
  • (3)3х + 8y = -2
  • 9x + 24y = - 6
  • (4)-3х – 6у = -6​
  • -12x-24y=-24
  • 9x = - 6
  • -12x= -24
  • -3x=-30
  • 3x=30
  • x=30/3
  • x=10
  • Put x back into equation
  • 3х + 8y = -2
  • 3(10) + 8y = -2
  • 30 + 8y = -2
  • 8y= -2-30
  • 8y= -32
  • y= -32/8
  • y= -4
  • Verify solutions
  • -3х – 6у = -6​
  • -3(10) - 6(-4)= - 6
  • -6=-6
Answer Link

Otras preguntas

A grocery store has 5 pounds of granola. One customer buys 2/3 pound of granola and another buys 5/6 pound. After these purchases, how much granola is left?
Who signed the civil rights act of 1964
What is the perimeter of a rectangle with a length of 11.5 yd and a width of 5 yd? Question 1 options: a) 66 yd b) 33yd c) 18yd d) 16.5yd
the earliest known fossils are from the Archaean eon of the geologic time scale true false
Oil is leaking from a tanker at the rate of R(t) = 2000e^(-0.2t) gallons per hour where t is measured in hours. How much oil leaks out of the tanker from th
Elimination of x-y=11 2x+y=19
What is the purpose of an indicator?
A. 12 B. 6 C. 15.9 D. 11
Can someone help me please
A price increase from $12 to $15 find the percent of increase