BuyFindarrow_forward

Elementary Technical Mathematics

12th Edition
Dale Ewen
ISBN: 9781337630580

Solutions

Chapter
Section
BuyFindarrow_forward

Elementary Technical Mathematics

12th Edition
Dale Ewen
ISBN: 9781337630580
Textbook Problem

Solve each equation using the quadratic formula (when necessary, round results to three significant digits):

18.9 x 2 44.2 x = 21.5

To determine

To calculate: The solution of the equation 18.9x244.2x=21.5 by the use of quadratic formula.

Explanation

Given Information:

The given equation, 18.9x244.2x=21.5.

Formula used:

The quadratic equation in the form ax2+bx+c=0, the roots of the equation can be calculated by quadratic formula,

x=b±b24ac2a

Where, the coefficient of x2 is a, the coefficient of the term x is b, and the constant term is c.

Calculation:

Consider the equation,

18.9x244.2x=21.5

Rewrite the equation in the general form as below,

18.9x244.2x21.5=0

Compare the equation with the standard quadratic equation ax2+bx+c=0.

So, the values are a=18.9,b=44.2 and c=21.5.

Now, substitute the values of a, b and c, in the quadratic formula,

x=b±b24ac2a=(44.2)±(44.2)24(18.9)(21.5)2(18.9)=44.2±1953.64+1625.437.8=44.2±3579.0437.8

Solve further,

x=44

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Chapter 11 Solutions

Show all chapter solutions add
Sect-11.1 P-11ESect-11.1 P-12ESect-11.1 P-13ESect-11.1 P-14ESect-11.1 P-15ESect-11.1 P-16ESect-11.1 P-17ESect-11.1 P-18ESect-11.1 P-19ESect-11.1 P-20ESect-11.1 P-21ESect-11.1 P-22ESect-11.1 P-23ESect-11.1 P-24ESect-11.1 P-25ESect-11.1 P-26ESect-11.1 P-27ESect-11.1 P-28ESect-11.1 P-29ESect-11.1 P-30ESect-11.1 P-31ESect-11.1 P-32ESect-11.1 P-33ESect-11.2 P-1ESect-11.2 P-2ESect-11.2 P-3ESect-11.2 P-4ESect-11.2 P-5ESect-11.2 P-6ESect-11.2 P-7ESect-11.2 P-8ESect-11.2 P-9ESect-11.2 P-10ESect-11.2 P-11ESect-11.2 P-12ESect-11.2 P-13ESect-11.2 P-14ESect-11.2 P-15ESect-11.2 P-16ESect-11.2 P-17ESect-11.2 P-18ESect-11.2 P-19ESect-11.2 P-20ESect-11.2 P-21ESect-11.2 P-22ESect-11.2 P-23ESect-11.2 P-24ESect-11.2 P-25ESect-11.2 P-26ESect-11.2 P-27ESect-11.2 P-28ESect-11.2 P-29ESect-11.2 P-30ESect-11.2 P-31ESect-11.2 P-32ESect-11.2 P-33ESect-11.2 P-34ESect-11.3 P-1ESect-11.3 P-2ESect-11.3 P-3ESect-11.3 P-4ESect-11.3 P-5ESect-11.3 P-6ESect-11.3 P-7ESect-11.3 P-8ESect-11.3 P-9ESect-11.3 P-10ESect-11.3 P-11ESect-11.3 P-12ESect-11.3 P-13ESect-11.3 P-14ESect-11.3 P-15ESect-11.3 P-16ESect-11.3 P-17ESect-11.3 P-18ESect-11.4 P-1ESect-11.4 P-2ESect-11.4 P-3ESect-11.4 P-4ESect-11.4 P-5ESect-11.4 P-6ESect-11.4 P-7ESect-11.4 P-8ESect-11.4 P-9ESect-11.4 P-10ESect-11.4 P-11ESect-11.4 P-12ESect-11.4 P-13ESect-11.4 P-14ESect-11.4 P-15ESect-11.4 P-16ESect-11.4 P-17ESect-11.4 P-18ESect-11.4 P-19ESect-11.4 P-20ESect-11.5 P-1ESect-11.5 P-2ESect-11.5 P-3ESect-11.5 P-4ESect-11.5 P-5ESect-11.5 P-6ESect-11.5 P-7ESect-11.5 P-8ESect-11.5 P-9ESect-11.5 P-10ESect-11.5 P-11ESect-11.5 P-12ESect-11.5 P-13ESect-11.5 P-14ESect-11.5 P-15ESect-11.5 P-16ESect-11.5 P-17ESect-11.5 P-18ESect-11.5 P-19ESect-11.5 P-20ESect-11.5 P-21ESect-11.5 P-22ESect-11.5 P-23ESect-11.5 P-24ESect-11.5 P-25ESect-11.5 P-26ESect-11.5 P-27ESect-11.5 P-28ESect-11.5 P-29ESect-11.5 P-30ESect-11.5 P-31ESect-11.5 P-32ESect-11.5 P-33ESect-11.5 P-34ESect-11.5 P-35ESect-11.5 P-36ESect-11.5 P-37ESect-11.5 P-38ESect-11.5 P-39ESect-11.5 P-40ESect-11.5 P-41ESect-11.5 P-42ESect-11.5 P-43ESect-11.5 P-44ESect-11.5 P-45ESect-11.5 P-46ESect-11.5 P-47ESect-11.5 P-48ESect-11.5 P-49ESect-11.5 P-50ECh-11 P-1RCh-11 P-2RCh-11 P-3RCh-11 P-4RCh-11 P-5RCh-11 P-6RCh-11 P-7RCh-11 P-8RCh-11 P-9RCh-11 P-10RCh-11 P-11RCh-11 P-12RCh-11 P-13RCh-11 P-14RCh-11 P-15RCh-11 P-16RCh-11 P-17RCh-11 P-18RCh-11 P-19RCh-11 P-20RCh-11 P-21RCh-11 P-22RCh-11 P-23RCh-11 P-24RCh-11 P-25RCh-11 P-26RCh-11 P-27RCh-11 P-28RCh-11 P-1TCh-11 P-2TCh-11 P-3TCh-11 P-4TCh-11 P-5TCh-11 P-6TCh-11 P-7TCh-11 P-8TCh-11 P-9TCh-11 P-10TCh-11 P-11TCh-11 P-12TCh-11 P-13TCh-11 P-14TCh-11 P-15TCh-11 P-16TCh-11 P-17TCh-11 P-18T

Additional Math Solutions

Find more solutions based on key concepts

Show solutions add

In Problems 33 – 38, solve each inequality. 37.

Mathematical Applications for the Management, Life, and Social Sciences

In Exercises 1124, find the indicated limits, if they exist. 24. limxx2x+1

Applied Calculus for the Managerial, Life, and Social Sciences: A Brief Approach

Graph the following points: P(4,2),Q(2,4),R(1,3),S(4,2),T(2,1),U(2,0),V(4,4)

Finite Mathematics and Applied Calculus (MindTap Course List)

Calculate y'. 8. xey = y sin x

Single Variable Calculus: Early Transcendentals, Volume I

Find the values of f(x)=x25x+1 when x is 0, 1, and 4. Is f one-to-one?

Calculus: An Applied Approach (MindTap Course List)