IchikaKurama
IchikaKurama IchikaKurama
  • 24-01-2017
  • Mathematics
contestada

3x + 2y = A 5x + y = B Eliminating the variable y from the system of equations results in -7x =
A) A - 2B
B) 2B - A
C) A + 2B

Respuesta :

bcalle
bcalle bcalle
  • 24-01-2017
The answer is A
You would multiply the second equation by -2 to clear the 'y'.
This leaves -10x = 2B and 3x = A
When combining these we get -7x = A - 2B
Answer Link

Otras preguntas

In the tragedy of macbeth, act v, scene iii, what does macbeth's behavior toward the servant who comes to deliver a message ultimately show about macbeth's char
Two cranes can unload a ship together in 4 hours. The faster crane takes 6 hours less than the slower crane, if each were to unload the same ship alone. How lon
Admission to the zoo is $30. with a student id, admission is $24. how much is the discount?
What is 5/8 -(1/4)2 equals?
What is a fragment sentence?
Y=x+5 standard form Y=2/5x+2 standard form
magnesium (Mg) reacts explosively with oxygen (O2) Gas . Which Of These Elements is Most Likely To React With Oxygen In a Similar Way ?
s+18=(-3) what is s? How do I find it?
Rewrite the expression as a product of two factors 4x + 8
What is the answer to 7x-51=4x