Which one of these number sentences is NOT true? A: 600 cm = 6 m
B: 1 m < 9,000 mm
C: 900 mm = 9 cm
D: 10 km > 5,000

pls help!!

How to do this , and can some one explain

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50. write an inequality to determine the number of chores, c, janie could do to have enough money to buy the cd.

Ab based on the given diagram, if m_1 = 60° then m 2 = 30 60 90 180