Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

rafeds08

  • 2 years ago

express in roster form: B={xlxE N and 6<x<10}

  • This Question is Closed
  1. myininaya
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Just list all the natural numbers in the interval (6,10)

  2. rafeds08
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    B={7,8,9}

  3. myininaya
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Yep, that is right.

  4. rafeds08
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    thanks

  5. myininaya
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    np

  6. rafeds08
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    what is np?

  7. rafeds08
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    myininaya', what if the set Q of all prime numbers less than 10? can we consider the negative numbers?

  8. myininaya
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    I think it depends on the definition of prime numbers your teacher chose. I choose the definition that they are natural numbers greater than 1 and are only divisible by 1 and itself. For example: 13 since 13 and 1 are it's only factors

  9. UnkleRhaukus
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    \[\{n\in \mathcal N |(1<n<10)∧(\forall x,y\in \mathcal N)[(xy=n)⇒(x=1∨y=1)]\}\]

  10. myininaya
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    So do you think you can now list the prime numbers between 1 and 10 (not including 10 since it doesn't say equal to)?

  11. rafeds08
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yap

  12. rafeds08
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    A math teacher is preparing an exam each of his Algebra class. Math-alino and Math-matalino, covering topics A (circles) and B (inequalities). He wants to design the exams so that both classes will have the same number of questions on A and also on B. Each question on A is worth 15 points in section Math-alino and 20 points in section Math-matalino while each question on B is worth 10 points in section Math-alino and 5 points in section Math-matalino. If the total number of points in both exams is 100, how many questions should he ask on each topic?

  13. rafeds08
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    help me please UnkleRhaukus thanks in advance

  14. UnkleRhaukus
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    too confusing

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

    Search OpenStudy
    • 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.