College Algebra Semul

Solving Equations Graphically

Pre-Test

Active

Use the x-intercept method to find all real solutions of the equation.

x-12x 39 x-28 - 0

X= 1, 4, or -7

c. --1, - 4. or -7

b. --1, - 4. or 7

d. x-1, 4, or 7

Please select the best answer from the choices provided

the correct answer is d

hope this

1/3 + 1/3 ≠ 2/6 because 1/3 alone = 2/6  

step by step explanation:

1/3 + 1/3 = 2/3       2/3=4/6

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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.