Sold a system of equations and choose the correct ordered pair. 3x plus 4y equals 38 and 5x minus 5y equals -30

X=2

               Y=8

(2,8)

Step-by-step explanation:

3x+4y=38

5x-5y=-30

3x+4y=38

y-x=6

y=6+x

3x+4(6+x)=38

y=6+x

3x+24+4x=38

y=6+x

7x=14

x=2

y=2+6

y=8

problem:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

f(5/2) = 10/3

i hope this !

let's solve your equation step-by-step.

4x+2=2x+12

step 1: subtract 2x from both sides.

4x+2−2x=2x+12−2x

2x+2=12

step 2: subtract 2 from both sides.

2x+2−2=12−2

2x=10

step 3: divide both sides by 2.

2x

2

=

10

2

x=5

step-by-step explanation: