Question

HELP ASAP THIS IS SOMETHING DUE IN LESS THAN AN HOUR AND I HAVE OTHER PROBLEMS TO DO

Answer 1

30 degrees

Explanation:

Let Angle ABC be 2x, Angle EBC be 5x

`angle \: dbc = 90 - 2x \\ angle \: dbc \: + angle \: ebc = 180 \\ 90 - 2x + 5x = 180 \\ 3x = 90 \\ x = 30 \\ \\ angle \: dbc = 90 - 60 \\ = 30`