I need help finding x and I was wondering if I could see the steps as well

In the proof of the triangle angle sum theorem, you must draw an auxiliary line. which construction must you use to draw this line?

Compare these two waves: the blue and orange waves have the same pitch, but the blue wave is louder. the blue and orange waves have the same volume, but the blue wave has a higher pitch. the orange wave has a higher pitch, but the blue wave is louder. the blue wave has a higher pitch, but the orange wave is louder.

What is a rational number between 9.5 and 9.7