Answer:
domain is all reall numbers
X+y<=20 is false, because it tries to correlate the amount of hats and scarfs with the time, without considering the time to knit each object
x<=5 is correct, he can at most make 5 hats for more he is missing yarn
y<=8 is correct, same reasoning but with scarfs
5x+8y<=20 is false, it compares the yarn requirements with the total time
12x+6y<=20 is correct, a corrected version of the first constraint which uses the worktime of each object essentially meaning "the time worked on all objects has to be less than the 20 hour time total"
so
x<=5
y<=8
12x+6y<=20
are correct
The appropriate numbers to fill in the magic squares are;
Row 2, Column 2 = 21/133
Row 2, Column 3 = 24/38
Row 3, Column 2 = 70/95
Row 3, Column 3 = 25/95
<h3>How to use magic squares?</h3>
To solve this magic square, we will follow the procedures below;
- Step 1; Convert all the numbers into lowest forms.
- Step 2; Find the sum of any column or row which is 34/19.
- Step 3; Put the numbers given in such positions that the sum of each row, column and diagonal is equal.
- Step 4; Write the numbers in their original form.
When we follow those steps above, we will arrive at the following figures;
Row 2, Column 2 = 21/133
Row 2, Column 3 = 24/38
Row 3, Column 2 = 70/95
Row 3, Column 3 = 25/95
Read more about Magic Squares at; brainly.com/question/16160523
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About 12 feet tall it depends but on math version it's 5 feet tall. I'm not really sure though.
