Your answer would be 1. hope that helped
Answer:
81 - x^2
Step-by-step explanation:
this is a "special product," namely, the product of the sum and the difference of quantities 9 and x.
The product is the difference of two squares:
(9 + x)(9 - x) = 81 - x^2
Triangles = 180 degrees
Angle 1 = 30 degrees
Angle 2 = 40 degrees
Therefore 180 - 30 - 40 = 110 degrees = Angle 3
It is correct that given two angles of a triangle, the third angle must be 180 degrees - the other two angles. So Adeline’s triangle will have the same angles.
However, Solomon’s triangle & Adeline’s triangle could be vastly different sizes. And since that’s possible, the two triangles cannot be guaranteed to be congruent.
