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Two sides of a triangle mesure 20cm and 30cm. what is the measure of the third side

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.

How do the definitions, properties, and postulates you've learned about line segments, parallel lines, and angles to define the shapes of polygons