Which of the following expressions would simplify to be the additive inverse of -2? 2 0 <2 to the power of 0 2 · 0 2 1 <2 to the power of 1 2 -1 < 2 to the power of -1

What is the length of bc ? enter your answer in the box.bc =

Taking algebra two apex courses and need with these questions

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¯¯¯¯¯¯¯¯)?