you need another equation to solve them simultaneously since they are two unknown
Since CB || ED and CB = ED,
by the alternate interior angles theorem,
mE = mC, and mD = mB.
with CB = ED, we can conclude that CBF = EDF, by SAS congruent theorem.
<h2>
Answer:</h2>
18
Step-by-step explanation:
10$ 180$
10 x 18 = 180
so she work 18 hours.