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 that's 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

## Related Questions

- Math - The demand and supply equations for a certain item are given by D = -5p...
- Pre-calculus - You are given a pair of equations, one representing a supply ...
- algebra,help - I am clueless about this one...can someone help me with it ......
- College Math - Suppose the supply and demand for a certain videotape are given ...
- Math - Suppose the supply and demand for a certain videotape are given by: ...
- Mircoeconomics: Elasticity - Please help! I have a mid-term test in a couple of ...
- math - You are given a pair of equations, one representing a supply curve and ...
- math - The demand for your college newspaper is 2200 copies each week if the ...
- MATH - The demand for your college newspaper is 2200 copies each week if the ...
- pre-calculus - You are given a pair of equations, one representing a supply ...

More Related Questions