Answer:
two solutions : (0,-3) , (3,0)
Step-by-step explanation:
hello :
y= x² -2x -3 ...(*)
y= x -3....(**)
x²-2x-3 = x -3
x²-3x=0
x(x-3) = 0
x=0 or x-3=0
x=0 or x=3
but : y=x-3
1) x=0 y=0-3=-3
2) x=3 y=3-3=0
two solutions : (0,-3) , (3,0)
Answer:
x=22
Step-by-step explanation:
(x+44)+3x
-x -x
44+2x
/2 /2
x=22
Answer:
660 liters
Step-by-step explanation:
363 = (1 - 0.45)x
363 = 0.55x
x = 363/0.55 = 660