What is 4 8/9 plus 3 2/11

Identify an equation in point slope form for the line perpendicular to y=3x+5 that passes through (4,-1)

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¯¯¯¯¯¯¯¯)?

Solve: 3x+y=6 4x-2y=18 show all work !