melschell123
melschell123
01-02-2018
Mathematics
contestada
I need help with 3x-y=4 y=6-2x
Respuesta :
sqdancefan
sqdancefan
05-02-2018
Since you have a "y=" equation, this is solved nicely by substitution.
.. 3x -(6 -2x) = 4
.. 5x -6 = 4
.. 5x = 10
.. x = 2
Then
.. y = 6 -2x
.. y = 6 -2*2 = 2
The solution is (x, y) = (2, 2).
Answer Link
VER TODAS LAS RESPUESTAS ( 89+ )
Otras preguntas
Evaluate the expression if m = −4, n = 1, p = 2, q = −6, r = 5, and t = −2. ||16+4(3q+p)||
When did Lozen's training begin?
Explain how improving the EXERGY may be as good, if not better than discovering new/oil coal mines.
Explain why the decade of the 1830s is known as ‘great economic hardship’ in Europe . Give Reasons
Which piece of art shown in the unit do you like the best? why?
The mass of an object is measured to be 5.55g. The actual weight of the object is 6.00g. What is the percent error?
Evaluate: 3 (2m + 5) +2 (3 – m) when m= =4
True or False: If k = 4, then 3k + 5 = 39. Explain your reasoning for your answer.
Bailey swam 0.86 km, biked for 22.4 km, and ran 4.25 km. How many meters did she travel total? A: 2,751 B: 7,350 C: 21,428 D: 27,510
D. Wade's iPhone is 4 12/8 inches long. LeBron's iPhone is 5 3/8 inches long. Whose phone is longer, D. Wade or Lebron? Or are the phones the same length? Expla
