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標題:

Mathematics Change Subject in a Formula

發問:

1. The total cost ($C) of printing N books can be calcuated by using the following formula: C = 2 000+(100N+30N^2)/(500+3N) (a) Find the total cost if the number of books printed is 2 500. (b) Find the total cost if the number of books printed is 4 500. *5該列埋步驟!

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最佳解答:

1(a)N = 2500, C = 2000+(100N+30N2)/(500+3N) C = 2000+[100(2500)+30(2500)2]/[500+3(2500)] C = 2000+(187750000/8000) C = 2000+23468.75 C = 25468.75 B)N = 4500, C = 2000+(100N+30N2)/(500+3N) C = 2000+[100(4500)+30(4500)2]/[500+3(4500)] C = 2000+(607950000/14000) C = 2000+43425 C = 45425

其他解答:

A) 2 000+(100N+30N^2)/(500+3N)=2500 = 2.114+345345 =56456456415348081B933AEEFE995