Answer:
6.5 hours
Step-by-step explanation:
hope this helped u bye
Answer:


Step-by-step explanation:
In the triangle we have the following trigonometric equations:

and also:

The vertices of triangle QRS have coordinates Q(1, −2), R(3, −2), and S(2, −4). The coordinates are the coordinates of the vertices of triangle QꞌRꞌSꞌ when triangle QRS is reflected across the x-axis <span>Qꞌ(1, 2), Rꞌ(3, 2), Sꞌ(2, 4). The answer is letter B.</span>