Answer:
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Step-by-step explanation:
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Let H be the number hats and J the number of jackets. Then, we can write,

Now, since they want 250 items at least, we can write

Hence, the system of inequalities is
The given triangle has a right angle.
We use the mnemonics SOH-CAH-TOA.
1i)
,
,
ii)
,
,
,
,
2. We want to find the hypotenuse.
We know an angle to be 23 degrees.
We were also given the side opposite to this angle to be 1200km.
Therefore we use the sine ratio.