出勤率、合格率、成活率、发芽率、命中率都不可能大于100%。( )

时间:2023-03-14 11:14:43

脱式计算。 2.05(1.5 + 0.55)× 99% (38 × 23 - 14 )÷ 9720 87.5% × 89 + 12.5% × 89 1415 ×(421 + 314 )÷ 215

好评回答

正确

【副题】

2.05

(1.99%

=2.05×(1-0.01)

=2.05-0.0205

=2.0295

(38×23-14)÷972

=(874-14)÷9720

=860÷9720

=43/486

87.5%×

=(87.5%+12.5%)

=1×89

=89

1415×(421+314)÷215

=1415×735÷215

=283×735÷43

=(48)