Adragon was tamed by dumbledore to guard his home. the dragon guarded the home on the condition that dumbledore feed him 4 pieces of meat for every 10 hours. if one cow provides 10 pieces of meat, what is the smallest whole number of cows dumbledore needs to guard his home for 1 month (30 days)?

If chord ab is congruent to chord cd, then what must be true about ef and eg?

Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.

Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.