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 ( 56+ )
Otras preguntas
In triangle ABC , angle A is a right angle and angle B = 45. If AB = 19 feet, what is BC?
is 3/47 a rational number
a book had a length of 5 inches and a width of 8 inches what is the perimeter of the book
Which of these transitions would be used to show a relationship? a. First of all b. Meanwhile c. With regard to d. Out of the blue
What were three things Japanese "borrowed" from Korea and China?
reily adds 45.3 and 3.21.should his sum be greater than or less than 48?Tell how you know.
From the cross Aa × Aa, the probability of producing a homozygous dominant offspring is a. 75%. b. 50%. c. 25%. d. 100%.
is 3/5 a rational number
A SPORTING GOODS COMPANY CAN SHIP 6 FOOTBALLS IN EACH CARTON. HOW MANY CARTONS ARE NEEDED TO SHIP 75 FOOTBALLS
Jeffery bought 203 sheets of stickers. Each sheet has a dozen stickers. He gave away 907 stickers to his family on valentines day. How many stickers does Jeffer
