What is the minimum angle of rotation (in degrees) that will carry the star onto itself?
2 answers:
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Answer:
x + y <= 30
6x + 9y >= 180
Step-by-step explanation:
If we call x the number of big boxes containing six smaller boxes of adults shoe and y the number of big boxes containing nine smaller boxes of children's shoe:
x + y <= 30 -> we only have 30 big boxes
We only want to pack 180 pairs of shoes, so we want the number of pairs of shoes in x and y to be less than 180, therefore:
6x + 9y >= 180
In the graph down below see that any selection of x and y inside the purple region satisfies the system of inequalities and is a solution to the problem.
