Someone please help me!!

Systems of equations that have the same solution are called equivalent systems. We can produce an equivalent system by replacing one equation by the sum of the two equations, or by replacing an equation by a multiple of itself.

1/3x+y=5/4

and

2x-4y=5

Now we use elimination

y=-1/3x+5/4

-4y=4/3x-5

4/3x+4y=5

and

2x-4y=5

Eliminate the y's,

10/3x=10

10x=30

x=3

Plug into other equation

2x-4y=5

2(3)-4y=5

6-4y=5

1=4y

y=1/4

Answer (3,1/4)

Brainliest/Heart would help

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)

set each factor equal to 0

4x-3 = 0

2x-1 = 0

solve for x.

4x-3=0

4x=3

x= 3/4

solve for x. 

2x-1= 0

2x= 1

x= 1/2

your answer should be 1/2 is less than or equal to x and 3/4 is greater than or equal to x