A community for students.
Here's the question you clicked on:
 0 viewing
EmmaH
 2 years ago
is x4x=3x??
EmmaH
 2 years ago
is x4x=3x??

This Question is Closed

mathstudent55
 2 years ago
Best ResponseYou've already chosen the best response.1x is the same as 1x 4x is 4 x If you had 1 4 what do you get?

EmmaH
 2 years ago
Best ResponseYou've already chosen the best response.0im having a lot of trouble with this Solve the system. y = 2  x and y = 4x + 7 (1, 1) (1, 3) (1, 3) (1, 1) no solution im prettyy sure tis no solution

mathstudent55
 2 years ago
Best ResponseYou've already chosen the best response.1Right, so since 1  4 = 5, then x  4x = 5x

mathstudent55
 2 years ago
Best ResponseYou've already chosen the best response.1Now the system. Again, you have the two equations solved for y already, so use substitution.

mathstudent55
 2 years ago
Best ResponseYou've already chosen the best response.1Do you remember from the two previous systems what to do next?

mathstudent55
 2 years ago
Best ResponseYou've already chosen the best response.1Ok, let me see what you're up to since you're having trouble with it.

EmmaH
 2 years ago
Best ResponseYou've already chosen the best response.0ok so i had 2x=4x+7 2x +2=4x+7+2 x=4x+9 x4x=9 now im stuck

mathstudent55
 2 years ago
Best ResponseYou've already chosen the best response.1The 2 on the left side is positive, so you need to subtract 2 from both sides.

seanwalsh1984
 2 years ago
Best ResponseYou've already chosen the best response.0x (so 1x) take away 4 more x's. It's like being $1 in the hole in the bank account. Spend four more bucks, and you are $5 in the whole, not $3. However... x  4x = 3x is interesting because: x  4x + x = 3x + x Then we have 4x = 3x Then as said above, if x = 0, then it is true, otherwise no. Hope this helps.

mathstudent55
 2 years ago
Best ResponseYou've already chosen the best response.12  x = 4x + 7 2  2  x = 4x + 7  2 x = 4x + 5 Now subtract 4x from both sides

mathstudent55
 2 years ago
Best ResponseYou've already chosen the best response.1x  4x = 4x  4x + 5 5x = 5

mathstudent55
 2 years ago
Best ResponseYou've already chosen the best response.1dw:1356283149364:dw

mathstudent55
 2 years ago
Best ResponseYou've already chosen the best response.1Now insert this value of x in one of the original equations, and solve for y

EmmaH
 2 years ago
Best ResponseYou've already chosen the best response.0sorry i had to do something i do it one sec

mathstudent55
 2 years ago
Best ResponseYou've already chosen the best response.1y = 3. You're right, but remember x = 1, not x = 1

mathstudent55
 2 years ago
Best ResponseYou've already chosen the best response.1dw:1356283635553:dw

EmmaH
 2 years ago
Best ResponseYou've already chosen the best response.0one more question The ordered pair (1, 1) is a solution of the system 4x + 2y = 2 and x + y = 2. True False

mathstudent55
 2 years ago
Best ResponseYou've already chosen the best response.1Substitute the ordered pair into both equations. If it makes them both true, it's a solution.

mathstudent55
 2 years ago
Best ResponseYou've already chosen the best response.14x + 2y = 2 Try (1, 1) Is 4(1) + 2(1) = 2 ? 4  2 = 2? Yes. The ordered pair works in the first equation. Now try the second. x + y = 2 Is 1 + (1 ) = 1 true? 2 = 2. It's true. You are correct, (1, 1) is a solution.
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.