Claire is drawing a regular polygon. She has drawn two sides with an interior angle of 140°, as shown below.
140
When Claire completes the regular polygon, what should be the sum, in
degrees, of the interior angles?
A) 1260°
o
B) 700
C) 560°
D) 420

According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

Suppose you just purchased a digital music player and have put 8 tracks on it. after listening to them you decide that you like 4 of the songs. with the random feature on your player, each of the 8 songs is played once in random order. find the probability that among the first two songs played (a) you like both of them. would this be unusual? (b) you like neither of them. (c) you like exactly one of them. (d) redo () if a song can be replayed before all 8 songs are played.