Three questions for multi step operations. These are the ones I got wrong, I will put the answer I got. Keep in mind they are wrong. 1. 8.6 + 4.4x - 11 = 54
X= 12.81
2. 4 + 1/4x + 3 = 10
X= .75
3. 7x - 10x + 18 + 2x = -5
X=4.6

the radius is 2 times the diameter.

step-by-step explanation:

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.