a jeweler wants to mix gold costing $17 per gram with an alloy costing $7 per gram to make a ring weighing 30 grams and costing
1 answer:
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Answer:
cos P = 71.09
Step-by-step explanation:
cos =
cos P =
cos P = 0.324
cos-1 of 0.324 is 71.09
cos P = 71.09