Quantcast

A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

96smidge

  • 2 years ago

Given the system of equations, what is the value of the system determinant? x + y = 8 x - y = 10

  • This Question is Open
  1. fewscrewsmissing
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    To find the determinant of a 2x2 matrix: \[A = \left[\begin{matrix}a & b \\ c & d\end{matrix}\right]\\ |A|=det(A)=ad-cb\]

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

    I'd actually forgotten how to do this since it's been so long, and it literally took a 2 second Google search ;)

  3. jedai17
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    a and c is the value of x and b and d is the value of y

  4. jedai17
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1361514044728:dw|

  5. jedai17
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    then find the determinant according to the formula given by @fewscrewsmissing

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

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

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.