Peter is overweight. he is 105 kg. his aim is to lose 500 g per week. if he manages this, how many weeks will it be until he is 90 kg?

30 Weeks

Step-by-step explanation:

Subtract 90 kg from 105 kg. (15 kg left over)

Since we are now measuring in kilograms, we have to turn the 500 g into kilograms.

1000 grams make up a kilogram, but we have 500 grams. Convert 500 grams into a kilogram. (0.5 kg or 2 kg)

Multiply: 15 x 0.5/2= 30

It will take Peter 30 weeks for him to weigh 90 kg.

17

step-by-step explanation:

51/3=17

thus 17 is your answer.

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.