Lheart
Lheart
04-04-2014
Mathematics
contestada
If 2x+z=2y and 2x+2y+z=20 what is the value of y?
Respuesta :
Аноним
Аноним
05-04-2014
[tex]2x+z=2y\to2x=2y-z\\\\substitute\ to\ 2x+2y+z=20:\\\\(2y-z)+2y+z=20\\2y-z+2y+z=20\\4y=20\ \ \ \ /:4\\y=5\to answer[/tex]
Answer Link
VER TODAS LAS RESPUESTAS ( 82+ )
Otras preguntas
Identify how often people usually think critically. A.twice a month B.once a week C.every day D.a few times a year
Which of the following statements is true? A. The equator is warmer than the poles because the sun's energy is spread over a larger area. B. The top layer of ro
Simplify expression 8- ( 8-2) \ 3
Which statement would most likely be made by a supporter of the wars in Iraq and Afghanistan? O A. The best way to influence international policy is through ec
I’ll be a junior in high school next year and I’m aiming for top colleges like Northwestern University, Princeton, Stanford, etc. I’m worried my schedule for ne
Which of the following statements best represents contemporary thinking on the nature/nurture issue? A. The relationship between genetics and environment is int
Find all zeroes of x^3-2x
The active ingredient in the first toothpaste approved by the ada was _______________.
Forming a hypothesis is the second step in a scientific investigation. this step is derived from two goals of psychology-description and ________.
Read the excerpt from act 1 of hamlet. which us the best adaptation f the underlined part of the excerpt
