Cosine is

which applies to a right triangle. I hope that helps you.
Divide the number of people by the number of plates per pack:
138 / 12 = 11.5
He need to buy 12 packs of plates to have enough.
Answer:
question 1: option C (1)
question 2: option A (3)
Step-by-step explanation:
hope it helps!
<span>16.66=16 <span>33/50 should be the answer
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