Andrew helps his father serve sandwiches at the company picnic. He served 95 total sandwiches. What percent of the sandwiches were turkey, if Andrew served 38 turkey sandwiches?

It’s going to be d. 4x^2-4x-19’

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since the cosine is the ratio of the adjacent side to the hypotenuse, you can see that cos 60° = ½. answer. according to the property of cofunctions (topic 3), sin 30° is equal to cos 60°. sin 30° = ½.