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Mathematics
Study Set
Pre-Calculus
Quiz 1: Equations and Inequalities
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Question 81
Multiple Choice
The height h in feet of an object thrown upward from a height of 4 ft, with an initial velocity of 30 ft/sec, is given by the equation
, where h represents the height of the object after t seconds. How long will it take the object to hit the ground? Answer in decimal form rounded to the nearest thousandth.
Question 82
Short Answer
Solve.
Question 83
Short Answer
Solve using the most efficient method.
Question 84
Multiple Choice
Solve.
Question 85
Multiple Choice
Use the discriminant to determine whether the given equation has two irrational roots, two rational roots, one repeated root, or two complex roots. Do not solve. 9x
2
- 6x = -1
Question 86
Short Answer
Solve using the zero product property. Be sure each equation is in standard form and factor out any common factors before attempting to solve. Check all answers in the original equation. -5x
3
= -13x
2
- 6x