Answer:
The additive inverse is equal to 
Step-by-step explanation:
we know that
Two polynomials area additive inverses if they are opposites of each other
we have

To find the additive inverse multiply the polynomial by -1

54 degrees because the angles are equal
If it is to the tenth, then you have to look at the hundredth place, if the number in the hundredth place is over 5 or 5, then you have to make the number in the tenth place move up one digit if it isn't over 5 or 5, then you don't do anything
Answer:
y = -7
Step-by-step explanation:
Put x = 2 in any one of the equation
5x +2y = -4
5*2 + 2y = -4
10 +2y = -4
2y = -4 -10
2y = -14
y = -14/2
y = -7