The base of a triangle is 9 inches and its height is 4 inches. what is the area of the triangle? a) 9 in b) 13 in c) 18 in d) 36 in

C

Step-by-step explanation:

Use the formula for the area of a triangle.

A = (b * h) / 2

Now plug in the values.

A = (9 * 4) / 2

A = 36 / 2

A = 18

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.