A 172 ft. building casts a 444 ft. shadow from the sun. To the nearest tenth of a degree, what is the angle of depression? Help pls

If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system? a. there are infinitely many solutions. b. there is no solution. c. there is exactly one solution. d. the lines in a system cannot be parallel.

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0

W-16=-12 solve each one step equation plz