Wednesday
July 23, 2014

Homework Help: math,help

Posted by jasmine20 on Thursday, April 19, 2007 at 9:29pm.

on one of last week homeworks i got this one wrong can someone explain to me what is the correct format.

The demand supply equations for a certain item are given by:
D= -5p+40
S=-p^2+30p-8

The correct answer was:

$1.43


how do you get to this answer because i've tried it and it doesn't come out.

i know that is Supply = demand then bring everything over to the right to be : 0 =p^2-35p+48 well thats how i started to do it but when i got to the answer i had it incorrect so can someone show me the correct way. Thank you ...any help is appreciative.

your quadratic equation is correct, but when I solved it by the formula i got
p=1.3215, you were close.

show me how you are using the formula, I can't tell your mistake otherwise.

Reiny,
how did you get p=1.3215 if the correct answer is $1.43 that is what the teacher gave us.

why don't you try to substitude x = 1.43 into the equation x^2 + 35x + 48 = 0

It does not work!
My answer works.

Two possibilities:
1. you copied the equations incorrectly
2. your teacher gave you the wrong answer.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Math - The demand and supply equations for a certain item are given by D = -5p...
Mircoeconomics: Elasticity - Please help! I have a mid-term test in a couple of ...
Math help - Fimd the market price and demand for the pair of supply and demand ...
algebra,help - I am clueless about this one...can someone help me with it ......
Honors Chemistry - I'm doing what's called "test repair" for my class where we ...
Economics - How is elasticity of supply related to elasticity of demand? Is this...
College Math - Suppose the supply and demand for a certain videotape are given ...
economics - Suppose the supply and demand for milk is described by the following...
Math - Suppose the supply and demand for a certain videotape are given by: ...
math - The demand for your college newspaper is 2200 copies each week if the ...

Search
Members