Answer:
first one is A and the second one is B.
Step-by-step explanation:
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°
The answer is 10080 you can use a calculator for this
Answer:
7
Step-by-step explanation:
- Plug 8 in: 12 - [2 + 6 ÷ (10 - 8)]
- 10 - 8 = 2
- Plug 2 in: 12 - [2 + 6 ÷ (2)]
- 6 ÷ 2 = 3
- Plug 3 in: 12 - [2 + 3]
- 2 + 3 = 5
- Plug 5 in: 12 - 5
- 12 - 5 = 7
I hope this helps!