Question

数学问题,希望有人帮我解释一下!

Answer 1

更新1:

请问0.842m点变出黎?

m/(m+64) *100% = 15.8% m/(m+64) = 15.8%/100% m = 0.158(m+64) m = 0.158m + 10.112 0.842m = 10.112 m = 12.0(3s.f.) 2008-05-14 18:29:22 补充： 1m - 0.158m = 10.112 m(1 - 0.158) = 10.112 0.842m = 10.112 m = 12.0(3s.f.)
参考: me
m ----- x 100% = 15.8% m + 64 m/m+64 = 15.8% --------------- --because 100% = 1 m/m+64 = 15.8/100--------(it es from 15.8%) 100m/m+64 = 15.8 100m= 15.8 x (m+64) 100m = 15.8m + 1011.2 100m - 15.8m = 1011.2 84.2m = 1011.2 m = 12