angle ABD equals 5x+6y+10 angle DBC equals 6x-7y angle CBE equals 4x-2y-7. AB is perpendicular to BC. DB is perpendicular to BE. Find the measure angle of DBC (please provide all steps)

Which of the following are independent events? a) knowing that it is going to rain tomorrow, and bringing an umbrella to schoolb) knowing that you have to get up early tomorrow, and going to bed before 9 p.mc) knowing that it is going to rain tomorrow, and going to bed before 9 p.md) knowing that you have a test in school tomorrow, and studying thw night before