Ab is obtuse acute to AD
DC is perpendicular parallel to AB
The answer to your question is C

Use the rational root theorem:

=16,

=1
The dividers of

: 1,2,4,8,16
The dividers of

: 1
Therefore, check the following rational numbers: +-


is a root of the expression, so factor out x-4
Compute

to get the rest of the equation.

Cancel the common factor:

is the final answer
Answer:
8:45
Step-by-step explanation:
5x48=240 sec
240 sec = 4 min
8:49-4min= 8:45