To check whether a function is odd or even, we simply substitute the argument by its negative version, namely "x" by "-x".
if the expression simplifies to resemble the original expression, that simply means the expression is
even. If it resembles the original negative expression, is
odd.
![\bf g(x)=-2x^3-9\\\\ -------------------------------\\\\ \stackrel{x=-x}{g(-x)}=-2(-x)^3-9\implies g(-x)=-2(-x)(-x)(-x)-9 \\\\\\ g(-x)=+2(x)(x)(x)-9\implies g(-x)=2x^3-9](https://tex.z-dn.net/?f=%5Cbf%20g%28x%29%3D-2x%5E3-9%5C%5C%5C%5C%0A-------------------------------%5C%5C%5C%5C%0A%5Cstackrel%7Bx%3D-x%7D%7Bg%28-x%29%7D%3D-2%28-x%29%5E3-9%5Cimplies%20g%28-x%29%3D-2%28-x%29%28-x%29%28-x%29-9%0A%5C%5C%5C%5C%5C%5C%0Ag%28-x%29%3D%2B2%28x%29%28x%29%28x%29-9%5Cimplies%20g%28-x%29%3D2x%5E3-9)
well, that doesn't look like the original
- 2x³ - 9, so is not
even.
and -f(x) would be
2x³ + 9, and that doesn't look like either, so is not
odd.
thus is neither.
Answer:
A building is 35 feet tall
35
The scuba diver is 35 feet below sea level
-35
The basement is 7.6 feet below ground
-7.6
Oliver owes his sister $23
-23
Erika jumped 2.3 feet above the ground
2.3
Step-by-step explanation:
You have to look at the word choice, like below or tall. If they are describing something below something else they generally want it to be negative, or if they are talking about how much you owe. Otherwise it will be positive. Then just match the numbers.
I think is 15units2 hope that right
X-4/3 <= 5
Multiply both sides by 3:
X-4 <= 15
Add 4 to both sides:
X <= 19
The answer is the third one.
Answer:
You have $126 saved and you've been saving for 28 weeks
Step-by-step explanation: