For balls of wool will make eight knitted's. how many balls of wool will make six caps

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?

What are the digits that repeat in the smallest sequence of repeating digits in the decimal equivalent of 24/11?

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.