, 21.06.2019 17:00 nelyanariba981p555ve

# Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?

### Another question on Mathematics

Mathematics, 21.06.2019 16:30
What is the slope of the line shown below?
Mathematics, 21.06.2019 17:00
The table shows population statistics for the ages of best actor and best supporting actor winners at an awards ceremony. the distributions of the ages are approximately​ bell-shaped. compare the​ z-scores for the actors in the following situation. best actor best supporting actor muequals42.0 muequals49.0 sigmaequals7.3 sigmaequals15 in a particular​ year, the best actor was 59 years old and the best supporting actor was 45 years old. determine the​ z-scores for each. best actor: z equals best supporting actor: z equals ​(round to two decimal places as​ needed.) interpret the​ z-scores. the best actor was (more than 2 standard deviations above more than 1 standard deviation above less than 1 standard deviation above less than 2 standard deviations below) the​ mean, which (is not, is) unusual. the best supporting actor was (less than 1 standard deviation below more than 1 standard deviation above more than 2 standard deviations below more than 1 standard deviation below) the​ mean, which (is is not) unusual.