A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 5 years ago

how would i solve this in systems of equtions ) girl went to rodeo while there she saw 17 heads and 48 legs how many people did she see? hw manny calves?

  • This Question is Closed
  1. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    hello, before i help u with this equtions may i know what grade you r in?

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

    So we need variables to represent out unknowns: let x = Number of humans let y = Number of calves (mooo!) Unless we're in Roswell, humans and calves both have one head each. So this is our first equation. \[x+y=17\] We'll define y in terms of x (we will see why in a minute). \[y=17-x \Rightarrow y=-x+17\] (We could have done x in terms of y, it doesn't matter as we can substitute for either.)

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

    Now what is the relationship between Calves and Humans and the number of legs they have, which together is 48. ???? #Humans + ????? #Calves = 48 legs total. Well multiply the number of humans by 2 to get the number of human legs. Multiply the number of Calves by 4 to get the number of Calf legs. Our equation: \[2x+4y=48\] Now substitute using the definition for "y" from the first equation. Now what is the relationship between Calves and Humans and the number of legs they have, which together is 48. ???? #Humans + ????? #Calves = 48 legs total. Well multiply the number of humans by 2 to get the number of human legs. Multiply the number of Calves by 4 to get the number of Calf legs. Our equation: \[2x+4(-x+17)=48\] Distribute.. \[2x+(-4x)+68=48\] Go ahead and solve for x (the number of humans). You should be able to get the rest from here.

  4. 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.