✔ 最佳答案
1m^3 : 6000cm^3 = 100^3 cm^3 : 6000 cm^3 = 500:3
630l/h 比較大, 630l/h = 630 x 0.001 m^3 / 3600s = 630000 cm^3 / 3600s = 175 cm^3 /s
150c.c/s 比較少, 150 c.c/s = 150 cm^3/s
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Let a be the 本金 and t be the 年期.
a x (1+ 10% x t) = 3a
0.1 x t = 2
t=20 年
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30000 x (1+0.09/4)^2 - 8000 x 2 = $15365 C
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20000 x (1+ 0.06/365)^(365 x 3) - 20000 x (1+ 0.06/2) ^ 6 = $ 63 A
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70000 x (1- 0.15)^ t = 42989
t = 3 年 D
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( n - 2 ) x 180 度 / n = 156 度
n = 15
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Let n be the 邊數 and a be the 外角, b be the 內角.
a = 1/3 b -------(1)
na = 360 度 --------(2)
(n-2) x 180 /n =3a -------(3)
(n-2) x 180 = 3 x 360
n= 8