X2 -25 that’s the answer but it’s x squared 2 if that makes sense
Dr black is standing 13 feet from a streetlamp. The lamp is making his shadow 9 feet long. He estimates that the angle of elevation from the tip of his shadow to the top of the streetlamp is 50° to the nearest foot the streetlamp is about 26 feet tall.
I hope this helps!
9. answer is 12
10. answer is 3.5
11. answer is 23