Express the sine, cosine and tangent of the following angles as ratios
1 answer:
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Answer:
A
Step-by-step explanation:
Let d be the total number of computer desks and c be the total number eof single drawer file cabinets.
1. A computer desk weighs 50 pounds, then d computer desks weigh 50d pounds. A single drawer file cabinet weighs 30 pounds, then c cabinets weigh 30c pounds. In total, a train car can hold 1500 pounds of cargo, so
50d+30c=1500
2. A computer desk occupies a space of 4 cubic feet, then d computer desks occupy 4d cubic feet. A single drawer file cabinet occupies a space of 3 cubic feet, then c cabinets occupy 3c cubic feet. In total, a train car can hold 138 cubic feet of space, so
4d+3c=138.
Thus, we get a system of two equations: