An aluminum block has a mass of 82.0 g and a volume of 12.8 cm^3. what is the block's density to the nearest g/cm^3?

a) 5.2 g/cm^3
b) 5.9 g/cm^3
c) 6.4 g/cm^3
d) 7.0 g/cm^3

answer: the proof is mentioned below.

step-by-step explanation:

since, given:   lines bc = ef

prove:   lines ac > ef

          statements                                           reason

1. bc=ef                                           1. given

2. ac= ab+bc                                 2. because b is the point between the  

                                                            line segment ac

3.   ac > bc                                       3. because if a line segment is equal to

                                                          the sum of two line segments then it is

                                                          always greater then each of these

                                                          individual line segments

4. ac > ef                                         4. by equality property.