My Math Forum  

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

Algebra Pre-Algebra and Basic Algebra Math Forum


Reply
 
LinkBack Thread Tools Display Modes
July 19th, 2014, 11:30 PM   #11
Senior Member
 
tahirimanov's Avatar
 
Joined: Nov 2013
From: Baku

Posts: 502
Thanks: 56

Math Focus: Geometry
Quote:
Originally Posted by Denis View Post
Yes; multiply by 2:
2v^2 - v - 15 = 0
Now factor:
(2v + 5)(v - 3) = 0
No need for multiplication. (v+2.5)(v-3)=0
tahirimanov is offline  
 
July 19th, 2014, 11:45 PM   #12
Senior Member
 
Chikis's Avatar
 
Joined: Jan 2012

Posts: 724
Thanks: 7

I can see clearly that the equation above cannot be solved using factorization method. Or could it be solved using factorization method?
Using quadratic formula, we will come to a point where we have $\displaystyle \frac{0.5\pm\sqrt{30.25}}{2}$
= $\displaystyle \frac{0.5\pm5.5}{2}\rightarrow \\
v=3 \;or -2.5$
So normal rate = $3km/h$
Chikis is offline  
July 20th, 2014, 12:26 AM   #13
Senior Member
 
Chikis's Avatar
 
Joined: Jan 2012

Posts: 724
Thanks: 7

Quote:
Originally Posted by tahirimanov View Post
-2.5 is also valid solution, if Isatu walks backwards.
How do you mean? Could you explain what you mean using equation?
Chikis is offline  
July 20th, 2014, 12:32 AM   #14
Senior Member
 
tahirimanov's Avatar
 
Joined: Nov 2013
From: Baku

Posts: 502
Thanks: 56

Math Focus: Geometry
Quote:
Originally Posted by Chikis View Post
How do you mean? Could you explain what you mean using equation?
Ask to Denis, he will explain....
tahirimanov is offline  
July 20th, 2014, 09:34 AM   #15
Math Team
 
Joined: Oct 2011
From: Ottawa Ontario, Canada

Posts: 13,447
Thanks: 946

EXPLANATION:
Sir Imanov is presently occupied playing Grepolis,
and will be back to you at some point in the
hopefully near future. Please be patient.

...by Ample Annie, Denis' secretary and, and....
Denis is online now  
July 21st, 2014, 08:30 AM   #16
Senior Member
 
tahirimanov's Avatar
 
Joined: Nov 2013
From: Baku

Posts: 502
Thanks: 56

Math Focus: Geometry
Quote:
Originally Posted by Denis View Post
EXPLANATION:
Sir Imanov is presently occupied playing Grepolis,
and will be back to you at some point in the
hopefully near future. Please be patient.

...by Ample Annie, Denis' secretary and, and....
tahirimanov is offline  
July 21st, 2014, 08:36 AM   #17
Math Team
 
Joined: Oct 2011
From: Ottawa Ontario, Canada

Posts: 13,447
Thanks: 946

Quote:
Originally Posted by tahirimanov View Post
What? You want to meet Ample Annie?
Denis is online now  
July 21st, 2014, 09:06 AM   #18
Senior Member
 
tahirimanov's Avatar
 
Joined: Nov 2013
From: Baku

Posts: 502
Thanks: 56

Math Focus: Geometry
Quote:
Originally Posted by Denis View Post
What? You want to meet Ample Annie?
Yes.

And Chikis, please change your profile picture. It is a math forum, not Sunday Baptist Church...
tahirimanov is offline  
July 21st, 2014, 10:37 AM   #19
Math Team
 
Joined: Oct 2011
From: Ottawa Ontario, Canada

Posts: 13,447
Thanks: 946

You sure? She has a smashed nose (bar fight) plus smells bad under the armpits.

Chikis didn't listen to me...hope he listens to you...
Denis is online now  
Reply

  My Math Forum > High School Math Forum > Algebra

Tags
average, find, isatu, normal, rate, school, walks



Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
How to find the average rate of change Shayna Calculus 1 June 4th, 2014 06:51 PM
Average Rate of Change headsupman Algebra 1 February 6th, 2013 03:59 PM
Average Rate of Change ChristinaScience Calculus 2 October 20th, 2011 12:45 AM
Average Rate of Change Between Points ChristinaScience Calculus 6 October 20th, 2011 12:21 AM
Average Rate of Change symmetry Algebra 6 June 12th, 2007 02:53 PM





Copyright © 2018 My Math Forum. All rights reserved.