tell whether the rates are equivalent 60 centimeters every 2.5 years 30 centimeters every 15 months. justify your answer​

Which of the following expressions are equivalent ?

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¯¯¯¯¯¯¯¯)?

What is 1/3x5 on anuber line what does it look like on a number line