Write an equation for each problem. then solve. round to the nearest tenth if necessary.1. 65% of what number is 78? 2. what percent of 2,000 is 83. what is 110% of 80? 4. 85 is what percent of 170? 5. find 30% of 70.

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.