
Systems of inequalities
Please check my answers:
Graph the inequality.
3x+5y< or equal to 15
http://i48.photobucket.com/albums/f2...sol/f1q3g4.jpg
x^2+y^2>25
http://i48.photobucket.com/albums/f2...l/f1q4g31.jpg
y>x^24
http://i48.photobucket.com/albums/f2...sol/f1q5g2.jpg
y< or equal to x^2+2
http://i48.photobucket.com/albums/f2...sol/f1q6g5.jpg
Graph the solution set of the system of inequalities or indicate that the system has no solution.
2xy < or equal to 6
x+2y> or equal to 2
http://i48.photobucket.com/albums/f2...sol/f1q7g3.jpg
x+2y> or equal to 2
xy< or equal to 0
http://i48.photobucket.com/albums/f2...l/f1q8g31.jpg
x^2+y^2< or equal to 49
10x+5y< or equal to 50
http://i48.photobucket.com/albums/f2...sol/f1q9g4.jpg
Solve the problem.
A person with no more than $4000 to invest plans to place the money in two investments, telecommunications and pharmaceuticals. The telecommunications investment is to be no more than 3 times the pharmaceuticals investment. Write a system of inequalities to describe the situation. Let x=amount to be invested in telecommunications and y=amount to be invested in pharmaceuticals.
I got:
x+y=4000
x< or equal to 3y
x> or equal to 0
y> or equal to 0

Quote:
Originally Posted by
soly_sol
These are good.
Dan

Quote:
Originally Posted by
soly_sol
These are good, too.
Dan