Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions


 2x+5y=-8 and 6x+15y=k isdetermine the value of k so that the system 2x+5y=-8 and 6x+15y=k is dependent                                          6x+15y= -22
0 0 0
2x+5y=-8 and 6x+15y=k
Notice that when you multiply 2x by 3 you get 6x. And when you multiply 5y by 3 you get 15y. So when you multiply -8 by 3 you will get k which will be equal to -24.

Checking by elimination method:
 Equation 1 : 3(2x+5y=-8) --------> 6x+15y=-24
 Equation 2: 6x+15y=-24

If you subtract both the equations you will get 0=0 ( zero=zero) which is the property of a dependent system
0 0 0
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts