段階的に解決し、人工知能を使用せず、優れた仕事を行いますご支援ありがとうございましたSOLVE STEP BY STEP IN DIGITAL FORMATDON'T USE AI | DON'T USE AI | DON'T USE AI | DON'T USE AI |3. Find the base of a rectangle of height 7 m and whose area isthree times the length of its perimeter.4.A22-year-old father has a 2-year-old son. Within how long willthe father's age be three times that of the son?

Given height of rectangle =h=7mlet base =b mso area =base X height=perimeterGiven area=three times…

Answered: 3. Find the base of a rectangle of…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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段階的に解決し、人工知能を使用せず、優れた仕事を行います
ご支援ありがとうございました
SOLVE STEP BY STEP IN DIGITAL FORMAT
DON'T USE AI | DON'T USE AI | DON'T USE AI | DON'T USE AI |
3. Find the base of a rectangle of height 7 m and whose area is
three times the length of its perimeter.
4.A22-year-old father has a 2-year-old son. Within how long will
the father's age be three times that of the son?

Expert Solution

Step 1: solution(3)

Given height of rectangle =h=7m

let base =b m

so area =base X height= $b cross times 7 equals 7 b space s q. m$

perimeter $equals 2 cross times left parenthesis b plus h right parenthesis equals 2 cross times left parenthesis b plus 7 right parenthesis equals 2 b plus 14$

Given area=three times of length of perimeter

$rightwards double arrow 7 b equals 3 cross times left parenthesis 2 b plus 14 right parenthesis rightwards double arrow 7 b equals 6 b plus 42 rightwards double arrow b equals 42 space m$

so base =42m