Solving Quadratics Using the Quadratic Equation

±1.5

• ±1.5

• 1.5

• ±1

• No real solution

Tags

CCSS.HSA-REI.B.4B

Practice Problem 9

smaller of the two answers only

Type your answer as x= with no extra spaces

Mathematical Equivalence

OFF

Tags

CCSS.HSA-REI.B.4B

What is the positive solution to the quadratic function given here?

• 3

• 12

• 4

• 0.5

What are the solutions to the quadratic equation?

• 0

• 4

Tags

CCSS.HSA-REI.B.4B

• A

• B

• C

• D

• -2

• 1

• 2

• -1

• 0

• 3

• -3

• 4

• -4

Answer explanation

What are the solution(s) to the quadratic?

• No solution

• 5

• -2

• 4

A ball is thrown into the air with an upward velocity of 100 ft/s. Its height, h, after t seconds is given by the function
 h = -16t² + 64t + 960.
When did the ball hit the ground?

• 10 seconds

• 2 seconds

• 5 seconds

• 7 seconds

Use the quadratic formula to solve: n² = 9n - 20

• n = 4, -5

• n = -4, 5

• n  = -4, -5

• n  = 4, 5

Tags

CCSS.HSA-REI.B.4B