A)
The discriminant (radicand) is √(b^2-4ac), let us call this "d" for the discriminant.
If:
d<0, there are no real solutions (though there are two imaginary ones)
d=0, there is one real solution
d>0, there are two real solutions.
In this case, d=12^2-4(4)9
d=144-144
d=0
So there is one real solution.
B)
9x^2-30x+25=0
9x^2-15x-15x+25=0
3x(3x-5)-5(3x-5)=0
(3x-5)(3x-5)=0
(3x-5)^2=0
x=5/3
x=1 2/3
Answer:
Pretty sure its 40
Step-by-step explanation:
There is only 3 odd numbers on a 6 sided dice (1, 3, 5) and you would just divide 120 and 3
<span>48/70=0.6857
</span><span>0.6857x100=68.57%</span>
Answer:
The answer is c, a, b, d
Step-by-step explanation:
