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Back to 9.8 Solve Quadratic Inequalities

9.8 Exercise 123

Avg difficulty 2.5

Solve by using the method of factoring, the square root principle, or the Quadratic Formula. Round your answers to the nearest tenth, if needed.

Julius built a triangular display case for his coin collection. The height of the display case is six inches less than twice the width of the base. The area of the of the back of the case is 70 square inches. Find the height and width of the case.

OpenStax Intermediate Algebra 2e, 9.8 Solve Quadratic Inequalities, exercise 123

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Adapted from Intermediate Algebra 2e © 2020 Rice University. Licensed under CC BY 4.0. Source: Intermediate Algebra 2e. Imported at revision 77a933c.