sophiaaaa3
sophiaaaa3 sophiaaaa3
  • 24-01-2020
  • Mathematics
contestada

look at the picture and can you explain to me how to solve the equation and using the substitution method

look at the picture and can you explain to me how to solve the equation and using the substitution method class=

Respuesta :

jimohfawwazajibola25
jimohfawwazajibola25 jimohfawwazajibola25
  • 24-01-2020

Answer:

x = 4   y = 0

Step-by-step explanation:

3x - y = 12 -------------(i)

2x + 5y = 8--------------(ii)

from (i)

y = 3x - 12----------------(iii)

put (iii) in (ii)

2x + 5(3x -  12) = 8

2x + 15x - 60 = 8

17x = 68

x = 4

sub. for x in (iii)

y = 3(4) -12

y = 0

Answer Link

Otras preguntas

Condition with frequent incidents of sudden, involuntary deep sleep is what?
The bacteria that produce food from the chemicals in the water surrounding hydro thermal vents deep in the ocean are?
The gym offers a discount when more than one member of the family joins.The first member ( n=10) pays $550 per year. The second member to join (n=1) get discoun
consider the decimal 0.101001000100001000001...do u think this decimal represnts a rational number why or why not
What is z over 5 - 7=2 and 1 3
What is z over 5 - 7=2 and 1 3
how can you round 17.24578 to the nearest hundredth?
What is the reciprocal of 9/10 as a mixed numeral?
factorise 3a2-4ab please
how do you graph f(x)= |x-2|+5