Answer:
x = 74.2°
Step-by-step explanation:
Complementary angles are two angles whose sum is 90°.
Let x = the second angle
15.8° + x = 90°
x = 90 - 15.8°
x = 74.2°
Answer: 
<u>Step-by-step explanation:</u>

The transformation is a reflection on the y-axis.
If we take the y-axis as the mirror line as shown in the diagram below, we can see that the distance of vertices A, B, and C to the mirror line are equals to the distance of vertices A', B' and C' to the mirror line.
i think it is 27 i did 5+4 then i did 9x3 and got 27
It might be c. im not really sure, but that's what I got. sorry if its wrong...