A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 5 years ago
Write a linear system that models the situation. The sum of two numbers is 14. Their difference is 10. I got 2+12 = 14. Help? I suck at this...
anonymous
 5 years ago
Write a linear system that models the situation. The sum of two numbers is 14. Their difference is 10. I got 2+12 = 14. Help? I suck at this...

This Question is Closed

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Does the problem call for you to solve it?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I don't think so. It just says model the situation as a linear equation..

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Maybe it's just x + y = 14

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0As a linear "system"?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0A system of equations has more than one equation.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0That's why I don't understand this...It's weird.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0The term linear refers to the variables having no exponents. So, it's asking you to write those two equations using x and y

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Don't you mean no coefficients?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Your first answer, X + Y = 14 is correct. You need to turn the Something minus something = 10 into a equation

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Bam. That's it! X + Y = 14 X  Y = 10

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0And yup, a linear equation has no exponents. All of it's variables are to the first power.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I always think the problem is going to be hard, but it's hella easy.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Thank You once...again.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0You're welcome. Also, Don't ever call yourself stupid, because you're not. Don't sell yourself short. If you keep telling yourself your stupid, you'll eventually believe it.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I'm stupid on this one question.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Okay now I'm stuck again.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0What is an equation for one CD costing $2 more than the other? Do you know? ><

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Well, the first step is to assign variables, right?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0You told me CDA = CD2 + $2, right?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Well both of the two Cds equal $28

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0We can use mathematics to describe relationships between things

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0What's the whole question?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0You buy two CDs for a total of $28. One CD cost $2 more than the other.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0_ XC Bahh. I can't answer it.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0It's asking you to write another system of equations, right?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0First off, what's in a system of equations? What is it? And why do we use it?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0We try to find the values of the unknown?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0A system of equations is a list of equations. It has several equations, usually with more than one variable

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Okay. We use a system of equations to help solve for more than one variable.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0With one equation, X + Y = 12, it's impossible to find what X and Y are. Can you tell me why?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Please tell me why. ^^

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Because we need a real number. You can't just solve it with variables?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Nope. Try graphing it

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0unless you make up the numbers..

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Variables exist within an equation, so we can put numbers in.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I think what you mean, is that there is an infinite amount of solutions, right?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0In the equation (X+Y = 12), if X = 3, than Y = 9, if X is 10, than Y is 2, and so on

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0You can graph these points, and it makes a straight line. The straight line represents all of the answers that work in the equation.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Okay. Are you telling me then I can find the slope...? rise/run right?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0The slope is a tool. It helps us graph the line, and it tells us how quickly it goes up or down. I'm explaining this to you, because I don't think you completely grasp graphing, or equations yet.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I know how to graph equations.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I usually use y=mx + b

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I then graph it from there, or there are other forms I can graph from like standard form or pointslope form.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I undestand that you can graph. But do you understand why you graph?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0We graph for a couple of reasons.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0First off, pictures are easier to understand than really complicated formulas

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Next, with a graph, we can solve equations that we don't know the answer of

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Equations? That's only useful for math! But, remember what I said? We use math to describe how things are related

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I'm going to give you two equations, and I want you to graph them, okay? When you graph them, you should be able to get the answer without doing any algebra.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0You need to just plug in a few points, and then plot them.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0X + Y = 12, and X  Y = 5

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Graph them on the same graph.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0(If that makes any sense :) )

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Yeah it does. You can solve linear systems by substitution or graphing or elimination..

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Okay it's 2:08am. It's not hat I want to not learn, but I need to goto sleep now. Thanks for the lecture.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0If you graph the two lines, they should intersect at only one point. That's the only answer that's correct.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0For your question, you need to write a system of equations.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Yeah they intersect, but I still think substitution is the easiest way out of all the methods I've learned.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0It's the fastest. With the more complicated math, you'll suddenly love graphing

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0What itf you can't draw lines that well?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Erm, substitution is. And, the lines don't have to be perect.Anyway, You buy two CDs for a total of $28. One CD cost $2 more than the other.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0also I know I have to write linear systems but I only think I have to write two.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0x + y = 28 I know that's one.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I think the other is 2  y ...

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0One CD + 2 = another CD, right?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Just substitute the variables

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0No the total cost of the two equals 28 dollars.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I don't need to solve it..

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Yeah. But the 2nd clause says that one cd costs two more dollars than the other

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Oh I wrote an expression..

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Oh I wrote an expression..

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Oh I wrote an expression..

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0X + 2 = Y. Truthfully, it doesn't matter what variable +2 = the other variable.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Anyway, I'm sorry I wasn't the most helpful for the equation. God bless with your mathematic endeavors, and good night.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Ashag, are you still here? If so, go to your latest problem, and I"ll take a crack at it
Ask your own question
Sign UpFind 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
 Engagement 19 Mad Hatter
 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.