s1haPieraCharyg7irl
s1haPieraCharyg7irl s1haPieraCharyg7irl
  • 25-05-2016
  • Mathematics
contestada

What is the solution of the system? Use elimination.
5x – y = 20
2x + y = 15
A) (5, 5)
B) (7, 35)
C) (7, 0)
D) (5, -5)

Respuesta :

Willchemistry
Willchemistry Willchemistry
  • 25-05-2016
{ 5 x - y = 20
  2 x + y = 15
_____________
7 x = 35

x = 35 / 7

x =  5

For y :

2 x + y = 15

2*(5) + y = 15

10 + y = 15

y = 15 - 10

y = 5

Answer A  ( 5,5 )

hope this helps!

Answer Link

Otras preguntas

Medicine plural form
what is the length of the altitude of the equilateral triangle below A.4 b.12/3 c.12 d144 e./240 f. 4/3
18. What is another name for a complex carbohydrate?
What is the main mid west meal
Hi, I’m trying to learn sheet music but in the mean time I was wondering if someone could translate this piece into complete letter notation so that I might und
write down the place value of 7 in each of these numbers
- Which body of water separates Cairo and Rome
[tex]a^{2} *a^{3\\}[/tex]
( \frac { y ^ { - 1 } } { x ^ { - 1 } } + \frac { x ^ { - 1 } } { y ^ { - 1 } } ) ^ { - 1 }​
Hey guys, anyone can help me with this, please? ​