the additive inverse of non complex 9 is -9 .
<u>Step-by-step explanation:</u>
Complex number is said to be the sum of whole numbers and imaginary numbers.The additive inverse of the any number is the changing the sign of the number. That is instead –ve sign is positive and vice versa.
Additive Inverse of Complex Numbers:
Let take the complex numbers
and its inverse be 
Step 1: Now add the Z and Z-1, we get

Step 2: Combine Like term, we get

Step 3: By using zero product property, we can equating as
and 
and 
Thus, the additive inverse of the complex numbers
.
Now, additive inverse of
=
.
Therefore , the additive inverse of non complex 9 is -9 .
X can be anything greater than 59 or x>59
Answer:
(-7,1)
Step-by-step explanation:
The vertex of a parabola is the maximum or minimum point on the graph. On this point, the maximum is at (-7,1).
Because the tree is the halfway point, the building would be twice as tall:
The building is 38 x 2 = 76 feet tall.
Answer: 180 i think
Step-by-step explanation: .5*200+.2X=.3(200+X)
100+.2X=60+.3X
.2X-.3X=60-100
-.1X=-40
X=-40/-.1
X=400 OUNCES OF 20% COPPER.
PROOF
.5*200+.2*400=.3(200+400)
100+80=.3*600
100+80=180
180=180