3 years ago

Please help me with this question.

Mathematics

2 answers:

dangina [55]3 years ago

8 0

Answer:

a. 1.5 inches wide.

Step-by-step explanation:

If the width of the frame is x the length of the picture + frame = 2x + 12 and the width is 2x + 9 , so we have the following equation:

The total area = (2x + 9)(2x + 12) = 180

4x^2 + 24x + 18x + 108 = 180

4x^2 + 42x - 72 = 0

2(2x^2 + 21x - 36) = 0

2 (2x - 3 )(x + 12) = 0

x = 1.5 , -12 (we ignore the negative root).

igomit [66]3 years ago

7 0

The correct answer is “a”

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