Find the standard deviation for the set of data. {24,7,27,22,5,26,20,21,19} A. 6.62
B. 7.17
C. 7.1
D. 7.39

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¯¯¯¯¯¯¯¯)?

You are shooting hoops after school and make 152 out of a total of 200. what percent of shots did you make? what percent did you miss? show proportion(s).

What is the radical expression that is equivalent to the expression 27 1 over 5?