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 ( 71+ )
Otras preguntas
Anybody know this answer ?
9.Which of the following elements of a traditional Greek tragedy is found in Othello? Select one: a. a prophet or seer to predict the end b. a main character in
What is the probability that you randomly receive a sugar cone with vanilla ice cream and chocolate sprinkles??
Rida and Elisa are each paid by the hour rida worked 5 1/2 hours and earned $77 Elisa worked 3 3/4 hours and $60 whose hourly rate is greater
What effort does increased blood flow have on the body when performing exercises?
What is the impact of world war 2 in terms of the holocaust?
What is the role of education in the contemporary society?
Isopropyl alcohol is mixed with water to produce a 38.0% (v/v) alcohol solution. How many milliliters of each component are present in 885 mL of this solution?
Anybody know the answer ?
A square frame has sides that are 7x inches.create an expression to represent the area of the square frame
