The Quadratic Formula

Question 1

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

t 0.87 s

Question 2

Which of the following did you include in your response? Check all of the boxes that apply.

Revolt · Accepted Answer

The 64 should have been added.

Question 3

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

Revolt · Accepted Answer

✔ no

Question 4

y = (-x + 4)2no✔ onetwo real solution(s)

Revolt · Accepted Answer

✔ one

Question 5

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

Revolt · Accepted Answer

✔ no; real solution(s): no; real solution(s): two; real solution(s): one

Question 6

Question 6

Revolt · Accepted Answer

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

Question 7

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

Revolt · Accepted Answer

✔ B; has one real root.: B; has a negative discriminant.: A; has an equation with coefficients: C

Question 8

Step 1: ax2 + bx + c = 0

Revolt · Accepted Answer

✔ A; Step 3:: A; Step 5:: A; Step 6:: A; Step 8:: A

Question 9

10x + y = -x2 + 2 noone✔ two real solution(s)

Revolt · Accepted Answer

✔ two

Question 10

Graph ✔ AX BC has a negative discriminant.

Revolt · Accepted Answer

✔ A

The Quadratic Formula Answers

More from this Course

TRY EDGENUITY HACKS