Solve by substitution 2.5x-3y=-3 3.25x-y=-14

Sherina wrote and solved the equation. x-56=230 x-56-56=230-56 x=174 what was sherina’s error? sherina’s work is correct. sherina only needed to subtract 56 from 230. sherina made a subtraction error when subtracting 56 from 230. sherina should have added 56 to both sides of the equation.

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2