Answer:
C. 1/(x^2 +1) > 0
Step-by-step explanation:
The cube of a negative number is negative, eliminating choices B and D for certain negative values of x.
1/x^2 is undefined for x=0, so cannot be compared to zero.
The value 1/(x^2+1) is positive everywhere, so that is the expression you're looking for.
1/(x^2 +1) > 0
Answer:
3, and b
Step-by-step explanation:
1. x =3
Because you have 3 little squares for one x
2. x= -12
b) 15+6=21
Answer:
Decreased by 40%!
Step-by-step explanation:
At first it goes down by 10%, then 30%, so you just add them together and get decreased by 40%.
Answer:
10 units
Step-by-step explanation:
Area of a triangle is 
= Area
where h is the height, and b is the base
We can substitute these values into the area equation and get:
Multiply both sides by 2:
x * 10 = 100
Divide both sides by 10:
x = 10
The missing side is 10 units long
Answer:
n = -1
Step-by-step explanation:
To make n on its own, you have to subtract 1 from both sides
0 - 1 = -1 + 1 + n
-1 + 1 = 0
-1 = n
