Solving Quadratic Equations

Question 1

Solve the quadratic equation by using a graphic approach. Round your answer to the hundredths place.

Revolt · Accepted Answer

x = 3.24 or x = -1.24

Question 2

Solve the quadratic equation by using a numeric approach. 0.02

Revolt · Accepted Answer

x = 7.8 and x = -12.8

Question 3

Solve the quadratic equation by using a numeric approach. 0.04

Revolt · Accepted Answer

x = 1.7 and x = -29.2

Question 4

Use a graphing calculator to sketch the graph of the quadratic equation, and then give the coordinates for the x-intercepts (if they exist).

Revolt · Accepted Answer

( 7, 0); ( 8, 0)

Question 5

The stopping distance, d ( in feet) for a car moving at a velocity (speed) v miles per hour is modeled by the equation: What is the stopping distance for a velocity of 40 miles per hour?

Revolt · Accepted Answer

108 ft

Question 6

Solve the quadratic equation by using a numeric approach.

Revolt · Accepted Answer

x = -4

Question 7

Use a graphing calculator to sketch the graph of the quadratic equation, and then give the coordinates for the x-intercepts (if they exist).

Revolt · Accepted Answer

( 0.5, 0); ( 2, 0)

Question 8

Solve the quadratic equation by using a numeric approach. 0.02

Revolt · Accepted Answer

x = 6.3 and x = -31.3

Question 9

The stopping distance, d ( in feet) for a van moving at a velocity (speed) v miles per hour is modeled by the equation: What is the stopping distance for a velocity of 10 miles per hour?

Revolt · Accepted Answer

15 ft

Question 10

Solve the quadratic equation by using a graphic approach.

Revolt · Accepted Answer

x = 8

Solving Quadratic Equations Answers

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