The Quadratic Formula

Question 1

3x = 0.5x2

Revolt · Accepted Answer

x = 0 or x = 6

Question 2

0 = 5x2 - 2x + 6

Revolt · Accepted Answer

mc002-3.jpg

Question 3

Question 27

Revolt · Accepted Answer

The formula was not simplified correctly. The 64 should have been added. The radicand should be 73. There should be 2 real roots.

Question 4

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

Revolt · Accepted Answer

The formula was not simplified correctly.; The 64 should have been added.; The radicand should be 73.; There should be 2 real roots.

Question 5

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 4 s

Question 6

y = 12x2 - 9x + 4 real solution(s) 10x + y = -x2 + 2 real solution(s) 4y - 7 = 5x2 - x + 2 + 3y real solution(s) y = (-x + 4)2 real solution(s)

Revolt · Accepted Answer

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

Question 7

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

Revolt · Accepted Answer

two

Question 8

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

Revolt · Accepted Answer

no

Question 9

y = (-x + 4)2 real solution(s)

Revolt · Accepted Answer

one

Question 10

Complete the statements.Graph has one real root. Graph has a negative discriminant. Graph has an equation with coefficientsa = 1, b = 4, c = -2

Revolt · Accepted Answer

B; Selection 1: B; Selection 2: A; Selection 3: C

The Quadratic Formula Answers

More from this Course

TRY EDGENUITY HACKS