A community for students.
Here's the question you clicked on:
 0 viewing
krissywatts
 3 years ago
use a system of equations in two variables solve the following problem: 4 times a first number decreased by 3 times a second number is 22. The sum between the first number and twice the second number is 0. Find the number?
krissywatts
 3 years ago
use a system of equations in two variables solve the following problem: 4 times a first number decreased by 3 times a second number is 22. The sum between the first number and twice the second number is 0. Find the number?

This Question is Closed

jazy
 3 years ago
Best ResponseYou've already chosen the best response.0first number = x second number = y so you have the equations: 4x  3y = 22 x + 2y = 0

jazy
 3 years ago
Best ResponseYou've already chosen the best response.0Which number is it asking you to find? The first or the second?

krissywatts
 3 years ago
Best ResponseYou've already chosen the best response.1I have to get numbers for both

jazy
 3 years ago
Best ResponseYou've already chosen the best response.0Ok then lets solve for x first: 4x  3y = 22 +3y 4x = 22 + 3y /4 x = 5.5 + 0.75y Now substitute the value of x into the second equation: x + 2y = 0 (5.5 + 0.75y) + 2y = 0 Now you combine the like terms: 5.5 + 0.75y + 2y = 0

jazy
 3 years ago
Best ResponseYou've already chosen the best response.0When you combine 5.5 + 0.75y + 2y = 0 you'll get the value of y.

jazy
 3 years ago
Best ResponseYou've already chosen the best response.0So what do you get when you solve fore y in: 5.5 + 0.75y + 2y = 0

krissywatts
 3 years ago
Best ResponseYou've already chosen the best response.1and for x i get 4 is this all correct?

jazy
 3 years ago
Best ResponseYou've already chosen the best response.0Yep your're right!:D No problem:)
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.