The length of AA' is the squareroot of 29.
ANSWER
The correct answer is B

EXPLANATION
The given exponential expression is

We can rewrite this as,

We need to simplify to obtain a positive index, so we apply the following property,

This implies that,

This will finally simplify to,

Therefore the correct answer is B
Answer:
y=124°
x=67°
Step-by-step explanation:
For the triangle on the right
180-74-50=56°
then y= 180-56=124°
For the triangle on the middle (that small triangle)
180-85(Head opposite angles)-50=45°
So
x=180-45-68=67°