Answer:
1.67 m/s/s.
Step-by-step explanation:
Acceleration = increase of velocity/time
= 10/6
= 1.67 m/s/s.
The sum of the angles in a heptagon is 900°, so we would add the real numbers that we have here:
121°+139°+125°+126°+158°+120°=789°
x would equal the remaining value:
x=900-789
x=111°