Answer:
Discriminant=8
Step-by-step explanation:
-x²+4x-2=0
here a=-1,b=4 and c=-2
Discriminant=b²-4ac
Discriminant=(4)²-4(-1)(-2)
Discriminant=16-8
Discriminant=8
i hope this will help you :)
Answer:
#14
#15 
Step-by-step explanation with pictures.
I hope this helps! :D
78.2 years
2005 - 1995 = 10
.23 * 10 = 2.3
75.9 + 2.3 = 78.2
The equation is 33 = 13 + 12 + 3x
33 = 25 + 3x
-25 -25
---------------------
8 = 3x
÷3 ÷3
---------------
2.666.... = x
Inequalities are the lines on a graph they plot if they're an order pair or not
Hopefully this helped. :)