Answer:C
Step-by-step explanation:
180-(60+40)=80°
C=80°
20/sin80. =a/sin40
a=(20sin40)÷sin80
=13.1
Answer:
2010
Step-by-step explanation:
1/2(24)(20)=240
50*45=2250
2250-240=2010
It’s 8 I think but you can ask your friends
Answer:
-7b^11
Step-by-step explanation:
7b^4×−b^7