Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

Annetta_Martin

  • one year ago

What is the value of the discriminant for the quadratic equation 2x2 - 3x + 1 = 0?

  • This Question is Closed
  1. Annetta_Martin
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Would this be 1 ?

  2. nick_kma
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yes

  3. P0sitr0n
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    a=2 b=-3 c= 1 b^2-4ac = 9-4*2*1] - 9-8 = 1

  4. Annetta_Martin
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Could you help me with two more questions?

  5. Annetta_Martin
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    These are a bit more complex and confusing....

  6. Annetta_Martin
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    You can work at most 15 hours next week. You need to earn at least $86 to cover your weekly expenses. Your job as a waiter pays $7.25 per hour, and your job as a dog walker pays $6.75 per hour. Identify the system of linear inequalities that models the situation where x is the number of hours worked as a waiter, and y is the number of hours worked as a dog walker. x + y >= 15 7.25x + 6.75y <= 86 x + y <= 15 7.25x + 6.75y >= 86 x + y <= 15 6.75x + 7.25y >= 86 x + y >= 15 6.75x + 7.25y <= 86

  7. nick_kma
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    You earn 7.25 as a waiter, and work x hours as a waiter, so you earn 7.25x as a waiter You earn 6.75 as a walker, and work y hours as a walker, so you earn 6.75x as a walker Total earnings = 7.25x + 6.75y Your earnings must total at least $86 So 7.25x + 6.75y ≥ 86 Given you can only work upto 15 hours per week, you know that x + y ≤ 15 So your answers are: 7.25x + 6.75y ≥ 86 and x + y ≤ 15

  8. P0sitr0n
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    x: waiter y: dog x+y=<15 (less than 15, but can be 15) 7.25*x+6.75*y >= 86

  9. Annetta_Martin
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Ok, that makes sense... one more please

  10. Annetta_Martin
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    With a tail wind, a plane traveled 800 mi in 5 hours. With a head wind, the plane traveled the same distance in 8 hours. Which system of equations could be used to solve this problem? (s + w)5 = 800 and (s - w)8 = 800 (s - w)5 = 800 and (s + w )8 = 800 5s + 8w = 800 and 5s - 8w = 800

  11. nick_kma
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    well well working for free thats not acceptable ...

  12. Annetta_Martin
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I'm pretty sure it's (s + w)5 = 800 and (s - w)8 = 800 I just wanted someone to double check but nvm I guess

  13. Annetta_Martin
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Thanks anyways!

  14. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Ask a Question
Find more explanations on OpenStudy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.