Mr. vella can build a brick wall in 4 days. his apprentice can build the same wall in 6 days. after working alone for 3 days, mr. vella became ill and left the job for his apprentice to complete. how many days did it take the apprentice to finish the wall?

12x + 1 = 25 solve the following equation. then place the correct number in the box provided.

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¯¯¯¯¯¯¯¯)?

15/16 as a decimal rounded to the nearest hundredth