What is the volume of a box that is 14 inches long, 7 inches wide, and 10 inches high

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 value of x is in the solution set of 4x – 12 s 16 + 8x?

Math i have no idea how to do a and b