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Back to 9.5 Solve Applications of Quadratic Equations

9.5 Exercise 47

Avg difficulty 2.5

Solve using any method. Round your answers to the nearest tenth, if needed.

A bullet is fired straight up from a BB gun with initial velocity 1120 feet per second at an initial height of 8 feet. Use the formula h = −16t2 + v0t + 8 to determine how many seconds it will take for the bullet to hit the ground. (That is, when will h = 0?)

OpenStax Intermediate Algebra 2e, 9.5 Solve Applications of Quadratic Equations, exercise 47

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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.