Question: PRACTICE & PROBLEM SOLVING PRACTICE Use the Quadratic Formula to solve each 26. When will the ball hit the ground? equation. SEE EXAMPLE 16. X-

PRACTICE & PROBLEM SOLVING PRACTICE Use the Quadratic Formula to solve each 26. When will the ball hit the ground? equation. SEE EXAMPLE 16. X- 10x + 25 =0 17. * + 28 +20 10% +25=0 (=5) = 1. 6=-10, 025 27. Will the ball reach a height of 5 meters? 18. 5x2 - 8x +4-0 19. *+ 9x - 1 - 38 -10 Use any method to solve the equation. SEE EXAMPLE 20. 3x - 20x - 7 =0 21. -x2+ 3x - 8-0 28. 4x2 +7x - 11=0 29. x2 + 4x + 4 = 100 Use the discriminant to identify the number and type of solutions for each equation. SEE EXAMPLE 3 30. 3x2 4x +7 = *+10 31. 6x3+ 2x +3 =0 22. 25x2- 20x + 4 =0 23. x2 + 7x + 11 =0 Find the value(s) of k that will cause the 24. 3x - Bx - 10 =0 25. 2x3 4 9% + 14 = 0 equation to have the given number and type of solutions. SEE EXAMPLE S 32. 5x2 + kx + 5 =0, 1 real solution Deon throws a ball into the air. The height, h, of the ball, in meters, at time t seconds is modeled by the function h(t) = -5t' + t + 4. SEE EXAMPLE 4 33. 3x2 + 12x + k = 0, 2 real solutions O 34. kx3- 3x + 4 = 0, 2 real solutions

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