Acoin-operated machine sells plastic rings. it contains 6 yellow rings, 11 blue rings, 15 green rings, and 3 black rings. sarah puts a coin into the machine. find the theoretical probability she gets a black ring. express your answer as a fraction and decimal. if necessary, round your answer to the nearest thousandth.
10 points!

Somone me i want to know what 18 hours out of 24 hours in a fraction

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label

What numbers are included in the set of integers? what numbers are not included?