Homework Help: Math

Posted by Keisha on Monday, December 28, 2009 at 8:42am.

If in the set A, 3x-4 and B 2x+5, with X is an intersect between the two sets, how do i find for x?? I already know the ans is 9, but need help with the working.

Do i just bring the 4 over to 5 and change the sign then add.

Math - drwls, Monday, December 28, 2009 at 9:34am
I am confused by your mention of "sets". I think A and B as the equations for straight lines.

If 3x -4 = 2x +5, then x = 9

That somes from setting the two equations equal to each other and solving for x

Answer this Question

Related Questions

Algebra - Observe the following sets and answer he quesions given below. A = The...
Sets - A is a set of all letters in the alphabet and B is a set of vowels in the...
Math - I have two problemson polygonal convex sets which I do not understand. ...
Algebra - At what two points do the graphs of y=2x^2-5x-12 and y=1/2x^2-3x+4 ...
Math-geometry - Given these sets: A = {3, 4, 5, 6, 7} B = {6, 7, 8, 9} C = {2, 4...
CALCULUS ONE! - The graph of sinx and cosx intersect once between 0 and pi/2. ...
calculus - what is the property that distinguishes finite sets from infinite ...
Rational Expression - (x+1/2x-1 - x-1/2x+1) * (2x-1/x - 2x-1/x^2) (x+1/2x-1 - x-...
Math - Sets A, B, and C have 6 members in common. Sets A and B have a total of ...
algebra - How do you factor numbers? 2x squared + 5x-3 for instance? 2x^2 + 5x -...

For Further Reading

First Name:
School Subject:
Answer: