The number of revolution made by a tire traveling over a fixed distance varies inversely with the radius of the tire .A 12-inch radius tire makes 100 revolution to travel a certain distance. How many revolution would a 16-inch radius tire require to travel the same distance?​

Chose the graph below that represents the following system of inequality’s

If there are 12 moths and some have 31 days and others have 30 days how many have 28 days?

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¯¯¯¯¯¯¯¯)?