MEGANHOLTZCLAW2
MEGANHOLTZCLAW2 MEGANHOLTZCLAW2
  • 15-09-2017
  • Mathematics
contestada

x = 3y - 6
2x - 4y = 8 

Solve the system of equations using substitution.
A)(-12,-2)
B)(15,7)
C)(21,9)
D)(24,10)

Respuesta :

texaschic101
texaschic101 texaschic101
  • 15-09-2017
x = 3y - 6....so sub 3y - 6 in for x in the other equation

2(3y - 6) - 4y = 8
6y - 12 - 4y = 8
2y = 8 + 12
2y = 20
y = 20/2
y = 10

x = 3y - 6
x = 3(10) - 6
x = 30 - 6
x = 24

solution is (24,10)
Answer Link

Otras preguntas

What percentage of the data values represented on a box plot falls between the minimum value and the lower quartile? 25% 50% 75%
If x, y, and z are positive and x/y=y/z, what is the geometric mean?
the boats crew consisted of nine able-bodied soldiers. which word is a collective noun?
Why do elements interact with each other?
Sam is paying off his eight-year, $15,360 loan in semiannual installments. The loan has an interest rate of 9.58%, compounded semiannually, and a service charge
This series of diagrams represent the steps of mitosis. Label each diagram and describe what occurs during each step
TRANSLATE THIS. Si esta traducido y saber a toda costa así que lo que estoy diciendo estoy aterrorizado de alturas y protegeré a mi gato no meterse con ella o p
A family is trying to pick from different shades of paint for their living room. They have narrowed it down to 3 different blues and 6 different greens. The fa
The sum of a number and 12 is 30
A normal plant cell holds water in the vacuole of the cell. This large organelle also gives the cell support. Suppose a plant is submerged in salt water. As a r