Icantfindausername
Icantfindausername Icantfindausername
  • 03-11-2016
  • Mathematics
contestada

Systems of equations using linear combinations/elimination

2x+5y=3
-x+3y=-7

a.4,1
b4,-1
c2,1
d2,0

Respuesta :

Cindycawell01 Cindycawell01
  • 03-11-2016
The answer is B
2x+5y=3(1) times it by 1
-x+3y=-7(2) times it by 2
____________________
2x+5y=3
-2x+6y=-14
__________
11y=-11
Y=-1

Now we have to found x..... you have to plug in -1 in 2x+5y=3...

2x+5(-1)=3
2x-5=3
2x=3+5
2x=8
X=8/2
X=4

There are your 2 solutions... hope you understand

Answer Link

Otras preguntas

3. The number of electrons and neutrons in an atom are 13 and 14, respectively. Find out the mass number, atomic number, valency, and symbol of the element. ​
What is the common ratio for the geometric sequence? 35/2, 7, 14/5, 28/25, ..…
can you name at least three of your favorite celebrities?how did these celebrities influence other people?how do arts and entertainment influence you as an indi
How did the United States entry into World War I change the culture and international political policies of the country?
Hw to write Ga letter
claim: some people affected by 9/11 disease may not even know it.i need supporting evidence
what is the difference between sanitizing and disinfecting
A baby can walk ⅛ of a meter in 1/24 of an hour. How many meters can they walk in 4 hours?
How was the sun created
Which expression represents "the sum of w and 4"? A) 4w B) W-4 C) W +4. D) w 4 F) 4-W