Correct answers only ! jude is placing boxes on a shelf that holds up to 80 lb. he has x small boxes that weigh 5 lb each and y large boxes that weigh 12 lb each. jude needs at least 4 small boxes on the shelf. select all inequalities that model this situation.

An electronics manufacturer wants to know if customers would be interested in a detachable keyboard for their tables and if so, what the most important features would be. the manufacturer partners with an electronics store to include copies of the survey with every purchase at that store for one week. which of the following best explains why this random sample is unlikely to be a good representative sample of tablet owners' preferences for a detachable keyboard? a) one week is likely not enough time to get a large enough sample. b) most people won't bother to send in the survey, which is likely to skew the results c) there is no way to verify whether the responders to the survey actually own a tablet d) the survey is biased because it was conducted through an electronics store, not the general population

Evaluate-27 ^4/3/8 a) - 81/16 b) 81/16 c) 16/81

Carl's candies has determined that a candy bar measuring 3 inches long has a z-score of +1 and a candy bar measuring 3.75 inches long has a z-score of +2. what is the standard deviation of the length of candy bars produced at carl's candies?