如图,已知:AB∥CD,射线AP交CD于E,∠CEP=(2x+30)°,∠A=(x+15)°,求x的值. 答案:【答案】45【解析】根据AB∥CD,得出∠PED=∠A,再利用平角的定义得出∠CEP+∠PED=180°,得出∠CEP+∠A=180°,进而得出结果.∵AB∥CD,∴∠PED=∠A=(x+15)°, ∵∠CEP+∠PED=180°, ∴∠CEP+∠A=180°, ∴2x+30+x+15=180, ∴x=45.— do you clean your room? —I clean it every day.
[ ]A. How long B. How often C. How soon D. How far