Answer:
C 3 cm per present
Step-by-step explanation:
1 = 3cm
2 = 6cm
3 = 9cm
Let's work out the discriminant b^2 - 4ac:-
D = (-5)^2 - 4*1*7 = 25 - 28 = -3
A negative discriminant shows that there are NO real solutions Answer
B. -20.005
( -86.005 ) + 66
= -20.005