Answer:
144
Step-by-step explanation:
In a regular decagon like the one shown in the picture each angle is 144 degrees and it all adds up to 1,440. If you want proof search up "angle of a decagon"
16+(-9)
-9+16
Addition equations that are equivalent
Answer:
11x + 4x = 49
Step-by-step explanation:
11x represents the number of sit-ups done times the number of days and +4x represents 4 more each day times the number of days. Hope this helps you :)
