The Quadratic Formula

Question 1

Choose the equation that represents the solutions of 0 = 0.25x2 - 8x.

Revolt · Accepted Answer

C:

Question 2

Which of the statements about the following quadratic equation is true? 6x2 - 8 = 4x2 + 7x

Revolt · Accepted Answer

A: The discriminant is greater than zero, so there are two real roots.

Question 3

3x = 0.5x2

Revolt · Accepted Answer

D: x = 0 or x = 6

Question 4

The height h (in feet) of an object t seconds after it is dropped can be modeled by the quadratic equation h = -16t2 + h0, where h0 is the initial height of the object. Suppose a small rock dislodges from a ledge that is 255 ft above a canyon floor. Solve the equation h = -16t2 + 255 for t, using the quadratic formula to determine the time it takes the rock to reach the canyon floor.

Revolt · Accepted Answer

A: t 0.87 s

Question 5

Question 5

Revolt · Accepted Answer

has one real root.: B; has an equation with coefficients: C

Question 6

y = 12x2 - 9x + 4✔ noonetwo real solution(s)

Revolt · Accepted Answer

A: ✔ no

Question 7

4y - 7 = 5x2 - x + 2 + 3y✔ noonetwo real solution(s)

Revolt · Accepted Answer

A: ✔ no

Question 8

Complete the statements.Graph A✔ BC has one real root.

Revolt · Accepted Answer

B: ✔ B

Question 9

Step 1: ax2 + bx + c = 0

Revolt · Accepted Answer

B: ✔ B

Question 10

0 = 5x2 - 2x + 6

Revolt · Accepted Answer

C:

The Quadratic Formula Answers

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