The answer should be y=-4x^2
<u>Answer:</u>
11
<u>Step-by-step explanation:</u>
We are given the following expression and we are to solve it:

Simplifying both the fractions before adding them to make it easier to solve:
= 
= 
= 
Therefore, the answer to the given mathematical expression is 11.
Answer:
A. between o.1 and o.3
Step-by-step explanation:
Between 1 and 3, there's 2.
All the angles should add up to 360°.
8x+10x+9+21x-12+90=360°
Group like terms together.
So,8x+10x+21x+9+90-12=360
39x+87=360
39x=360-87
39x=273
x=7
Y=3 X=1
I think this is the answer