My Math Forum  

Go Back   My Math Forum > High School Math Forum > Algebra

Algebra Pre-Algebra and Basic Algebra Math Forum


Thanks Tree2Thanks
  • 1 Post By skeeter
  • 1 Post By skeeter
Reply
 
LinkBack Thread Tools Display Modes
April 17th, 2017, 02:48 PM   #1
Senior Member
 
Joined: Feb 2016
From: seattle

Posts: 354
Thanks: 10

The distance d in miles that a person can see on a clear day from height h is .......

The distance d in miles that a person can see on a clear day from height h is given by
d=g (h)=1.22 sq root h

For b would I now replace 20320 with any numbers?
Thanks
Attached Images
File Type: jpg 20170417_154230.jpg (97.6 KB, 12 views)
GIjoefan1976 is offline  
 
April 17th, 2017, 04:34 PM   #2
Math Team
 
Joined: Jul 2011
From: Texas

Posts: 2,624
Thanks: 1303

Answer the question first, then evaluate for values of h > 20320 ... keep it reasonable since h is in ft.
Thanks from GIjoefan1976
skeeter is online now  
April 17th, 2017, 04:47 PM   #3
Senior Member
 
Joined: Feb 2016
From: seattle

Posts: 354
Thanks: 10

Quote:
Originally Posted by GIjoefan1976 View Post
The distance d in miles that a person can see on a clear day from height h is given by
d=g (h)=1.22 sq root h

For b would I now replace 20320 with any numbers?
Thanks
Thanks, well I would think it decreases since we keep going higher and we keep getting a decimal.but since they already started so high up so maybe I should only go up by one foot to 5 feet each time?
GIjoefan1976 is offline  
April 17th, 2017, 05:03 PM   #4
Math Team
 
Joined: Jul 2011
From: Texas

Posts: 2,624
Thanks: 1303

(1) if you were flying in an airplane, could you see a farther horizontal distance by climbing or descending?

(2) small changes in units won't change $d$ by much ... try increasing by a few thousand feet of change for each input.
Thanks from GIjoefan1976
skeeter is online now  
April 17th, 2017, 05:39 PM   #5
Senior Member
 
Joined: Feb 2016
From: seattle

Posts: 354
Thanks: 10

Quote:
Originally Posted by skeeter View Post
(1) if you were flying in an airplane, could you see a farther horizontal distance by climbing or descending?

(2) small changes in units won't change $d$ by much ... try increasing by a few thousand feet of change for each input.
Thanks for putting it that way!
GIjoefan1976 is offline  
April 17th, 2017, 05:45 PM   #6
Senior Member
 
Joined: Feb 2016
From: seattle

Posts: 354
Thanks: 10

Could someone tell me how to do C ? Or what I could look up on youtube to learn how to do it? it looks like possibly my teacher used division?

Thanks!!
GIjoefan1976 is offline  
April 17th, 2017, 06:17 PM   #7
Math Team
 
Joined: Jul 2011
From: Texas

Posts: 2,624
Thanks: 1303

$d=1.22\sqrt{h} \implies h = \left(\dfrac{d}{1.22}\right)^2$

sub in 100 for $d$ ...
skeeter is online now  
Reply

  My Math Forum > High School Math Forum > Algebra

Tags
clear, day, distance, height, miles, person



Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Day when second person overtakes first person swordf1sh Math 3 November 29th, 2016 02:12 PM
Height and distance Neel Trigonometry 3 November 6th, 2016 11:39 AM
Height and distance Neel Trigonometry 7 November 5th, 2016 03:39 AM
Express the height of the crate in terms of distance Luke4bs Algebra 2 August 14th, 2012 08:57 AM
Find Distance and Height symmetry Algebra 2 September 11th, 2007 07:20 PM





Copyright © 2017 My Math Forum. All rights reserved.