BuyFindarrow_forward

Mathematical Applications for the ...

11th Edition
Ronald J. Harshbarger + 1 other
ISBN: 9781305108042

Solutions

Chapter
Section
BuyFindarrow_forward

Mathematical Applications for the ...

11th Edition
Ronald J. Harshbarger + 1 other
ISBN: 9781305108042
Textbook Problem

Ladder safety A 30-ft ladder is leaning against a wall. If the bottom is pulled away from the wall at a rate of 1 ft/sec, at what rate is the top of the ladder sliding down the wall when the bottom is 18 ft from the wall?

To determine

To calculate: The rate at which the top of the ladder is sliding down the wall when the bottom is 18 ft from the wall if a 30-ft ladder is leaning against a wall and the bottom is pulled away from the wall at a rate of 1-ft/sec.

Explanation

Given Information:

A 30-ft ladder is leaning against a wall and the bottom is pulled away from the wall at a rate of 1-ft/sec.

Formula used:

According to the Pythagoras theorem,

a2+b2=c2

Where, a,b,c are the sides of the triangle.

Calculation:

As it is provided that a 30-ft ladder is leaning against a wall and the bottom is pulled away from the wall at a rate of 1-ft/sec.

Thus, this arrangement can be considered as a right angled triangle with the length of the ladder be the hypotenuse of the triangle and the height of the wall be the height of triangle.

Now, x be the height of the wall and y be the horizontal distance from the ladder to the wall, then, according to the Pythagoras theorem,

302=x2+y2 …… (1)

Differentiate the above equation with respect to t as,

0=2xdxdt+2ydydt …… (2)

Now, the rate at which the top of the ladder is sliding down the wall when the bottom is 18 ft from the wall is to be obtained, so substitute

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-7ESect-11.1 P-8ESect-11.1 P-9ESect-11.1 P-10ESect-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-11.1 P-34ESect-11.1 P-35ESect-11.1 P-36ESect-11.1 P-37ESect-11.1 P-38ESect-11.1 P-39ESect-11.1 P-40ESect-11.1 P-41ESect-11.1 P-42ESect-11.1 P-43ESect-11.1 P-44ESect-11.1 P-45ESect-11.1 P-46ESect-11.1 P-47ESect-11.1 P-48ESect-11.1 P-49ESect-11.1 P-50ESect-11.1 P-51ESect-11.1 P-52ESect-11.2 P-1CPSect-11.2 P-2CPSect-11.2 P-3CPSect-11.2 P-4CPSect-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-11.2 P-35ESect-11.2 P-36ESect-11.2 P-37ESect-11.2 P-38ESect-11.2 P-39ESect-11.2 P-40ESect-11.2 P-41ESect-11.2 P-42ESect-11.2 P-43ESect-11.2 P-44ESect-11.2 P-45ESect-11.2 P-46ESect-11.2 P-47ESect-11.2 P-48ESect-11.2 P-49ESect-11.2 P-50ESect-11.2 P-51ESect-11.2 P-52ESect-11.2 P-55ESect-11.2 P-56ESect-11.2 P-58ESect-11.2 P-59ESect-11.2 P-60ESect-11.2 P-61ESect-11.2 P-62ESect-11.2 P-66ESect-11.3 P-1CPSect-11.3 P-2CPSect-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-11.3 P-19ESect-11.3 P-20ESect-11.3 P-21ESect-11.3 P-22ESect-11.3 P-23ESect-11.3 P-24ESect-11.3 P-25ESect-11.3 P-26ESect-11.3 P-27ESect-11.3 P-28ESect-11.3 P-29ESect-11.3 P-30ESect-11.3 P-31ESect-11.3 P-32ESect-11.3 P-33ESect-11.3 P-34ESect-11.3 P-35ESect-11.3 P-36ESect-11.3 P-37ESect-11.3 P-38ESect-11.3 P-39ESect-11.3 P-40ESect-11.3 P-41ESect-11.3 P-42ESect-11.3 P-43ESect-11.3 P-44ESect-11.3 P-45ESect-11.3 P-46ESect-11.3 P-47ESect-11.3 P-48ESect-11.3 P-49ESect-11.3 P-50ESect-11.3 P-51ESect-11.3 P-52ESect-11.3 P-53ESect-11.3 P-54ESect-11.3 P-55ESect-11.3 P-56ESect-11.3 P-57ESect-11.3 P-58ESect-11.3 P-59ESect-11.3 P-60ESect-11.3 P-61ESect-11.3 P-62ESect-11.3 P-63ESect-11.4 P-1CPSect-11.4 P-2CPSect-11.4 P-3CPSect-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-11.4 P-21ESect-11.4 P-22ESect-11.4 P-23ESect-11.4 P-24ESect-11.4 P-25ESect-11.4 P-26ESect-11.4 P-27ESect-11.4 P-28ESect-11.4 P-29ESect-11.4 P-30ESect-11.4 P-31ESect-11.4 P-32ESect-11.4 P-33ESect-11.4 P-34ESect-11.4 P-35ESect-11.4 P-36ESect-11.4 P-37ESect-11.4 P-38ESect-11.4 P-39ESect-11.5 P-1CPSect-11.5 P-2CPSect-11.5 P-3CPSect-11.5 P-4CPSect-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-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-24ECh-11 P-1RECh-11 P-2RECh-11 P-3RECh-11 P-4RECh-11 P-5RECh-11 P-6RECh-11 P-7RECh-11 P-8RECh-11 P-9RECh-11 P-10RECh-11 P-11RECh-11 P-12RECh-11 P-13RECh-11 P-14RECh-11 P-15RECh-11 P-16RECh-11 P-17RECh-11 P-18RECh-11 P-19RECh-11 P-20RECh-11 P-21RECh-11 P-22RECh-11 P-23RECh-11 P-24RECh-11 P-25RECh-11 P-26RECh-11 P-27RECh-11 P-28RECh-11 P-29RECh-11 P-30RECh-11 P-31RECh-11 P-32RECh-11 P-33RECh-11 P-34RECh-11 P-38RECh-11 P-39RECh-11 P-40RECh-11 P-41RECh-11 P-35RECh-11 P-36RECh-11 P-37RECh-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-19T

Additional Math Solutions

Find more solutions based on key concepts

Show solutions add

Consumption of Bottled Water The annual per-capita consumption of bottled water (in gallons) and the scatter pl...

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

Graph of an Inverse Function Use the graph of f to sketch the graph of f1. 89.

Precalculus: Mathematics for Calculus (Standalone Book)

Find each quotient and check: (21y2+2y10)(3y+2)

Elementary Technical Mathematics

Graph each of the following lines. y=x

Trigonometry (MindTap Course List)

Test the series for convergence or divergence. 9. n=0(1)n2n(2n)!

Single Variable Calculus: Early Transcendentals

The unit vector in the direction of is:

Study Guide for Stewart's Multivariable Calculus, 8th

limh0ah1h=1 for a = a) 0 b) 1 c) e d) The limit is never 1.

Study Guide for Stewart's Single Variable Calculus: Early Transcendentals, 8th

Explain how a researcher using simple random sampling can still obtain a biased sample.

Research Methods for the Behavioral Sciences (MindTap Course List)