What weight represents 39th percentile
There are 30-18 = 12 girls. Their percentage is
... 12/30 × 100% = 40%
Scientific notation is always less than 1. If you had the decimal at 7.83, then it is less than one. 00000007.83. count from the decimal all the way to the left making it 7 jumps to the left to make 0.000000783. So it’ll be 7.83 x 10 to the power of -7
