# math,help

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!

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

1. 👍 0
2. 👎 0
3. 👁 146

## Similar Questions

1. ### economics

Each week, Bill, Mary and Jane select the quantity of two goods, x1 and x2, that they will consume in order to maximize their respective utilities. They each spent their entire weekly income on these two goods. Suppose you are

asked by Krissy on February 24, 2008
2. ### Math

Over a four-week period, Gail earned the following commissions? Week 1 \$250.00 Week 2 310.00 Week 3 275.00 Week 4 195.00 What was her average weekly commission for the period? A. \$205.00 B. \$207.50 C. \$240.00. D. \$257.50 i got d

asked by AK on July 29, 2008
3. ### 4th grade

sylvester bowls once a week. this week he bowled four games. his scores were, 105 103 107 109 what is his average (mean) for the week? explain how you found your answer. what is the median score for the week? explain how you found

asked by dk on January 6, 2011
4. ### trigonometry

a question just like this one was on one of my homeworks..i asked for help but i didn't understand the explanation..so i had to gues..nd now i have that kind of quesion again on my homework. pleease explain this thoroughly find

asked by y912f on January 16, 2009
5. ### Math- averages

Caitlyn sold 7cars per week for the first three weeks, but in week four she sold 11 cars. What is her average number of sales per week in her first four week on the job? A) 7 B) 8 C) 9 D) 11 E) 12 Please explain! Thanks!

asked by Jenny on July 29, 2013
6. ### math

I have a table with this info. plant growth: Week 1 - 1 inch, week2 -4 inches, week 3 - 6 inches, week 4 - 11 inches, week 5 - 14 inches Question is: would you expect the plants height to be 10 inches, 16 inches, or 30 inches at

asked by gracee on January 24, 2012
7. ### math

week 1 3 miles week 2 7 miles week 3 11 miles week 4 15 miles sophia predicted that jhon will run 32 miles during 9th week. use words symbols or numbers to explain wether sophia's prediction is correct

asked by gabriel on January 2, 2012
8. ### Math

A car salesman receives \$575 a week in addition to 3% commission on all cars whose sticker price is above \$4,500. One week he sold a Ford for \$8,785 and a Buik for \$5,832. How much did he earn that week? A. \$749.96 B. \$838.55 C.

asked by Samantha on December 30, 2012
9. ### Math

If you had a new business and you had 30 customers the first week and 55 customers the second week and 80 customers the third week, what would you project for week 4? Explain how you arrived at your answer.

asked by nate on September 14, 2012
10. ### Math

Jason measured rainfall for a science project. Last week it rained 3 1/8 inches in all. This week it rained 1 7/8 inches in one day and 2 3/4 inches on another. How many more inches did it rain this week then last week? Please

asked by Cindy on June 6, 2016

More Similar Questions