Answer:
what does d equal?
Step-by-step explanation:
Answer:10+16b
Step-by-step explanation:10+6b+8
10+16b
Answer:
C
Step-by-step explanation:
Most reasonable
Answer/Step-by-step explanation:
1. <ABC and <BCD are alternate interior angles. Alternate interior angles are equal, therefore, since m<ABC = 38°, then m<BCD = 38°
2. m<ECF = m<BCD (corresponding angles)
m<ECF = 38° (substitution)
3. m<DCF + m<ECF = 180° (linear pair)
m<DCF + 38° = 180° (substitution)
m<DCF = 180° - 38° (Subtraction property of equality)
m<DCF = 142°
1 2/3 would be your answer hopefully
