My math skills are pretty poor. In step four how did youget from 1 = 1 + 1 to190

Question

My math skills are pretty poor. In step four how did youget from 1            = 1              + 1        to190 ? 130          4.0x102            R Thanks!                                                                                                      My math skills are pretty poor. In step four how did youget from 1            = 1              + 1        to190 ? 130          4.0x102            R Thanks! Thanks!                                                                                                     

Explanation / Answer

1/130 = .0076923... 1/400 = .0025 Subtract the latter from the first: .0076923...-.0025 = .0051923... Take the inverse (sometimes a 1/x or an x^-1 button on thecalculator): gives: 192.5925
Hope this helps! Please rate my response. Thanks,
HA

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