The square root of 3111 to the power of 2

Step-by-step explanation:

The question looks like this.

square root (3111)^2

The square root of 3111 is 55.78

Now you have to square it 55.78^2 = 3111.4

The 0.4 comes up because 55.78 is a round of the actual square root which is

55.776339069537362385549858627874

This when squared gives you 3111 to the limit of the calculator used.

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

3x + 4y -25 =0 represents the amount of change sianna should recieve