Mathematics, 26.08.2019 15:30 andershy1405
"walter is mixing cement for his new patio. he knows he needs to use water-to-cement ratio of 20 to 30. what percent of his total mixture is water?
Answers: 1
Mathematics, 21.06.2019 16:50, gesic2003
Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?
Answers: 3
Mathematics, 21.06.2019 18:30, kevin72937
Three times the sum of a number and seven is negative thirty-six. what is the number?
Answers: 2
"walter is mixing cement for his new patio. he knows he needs to use water-to-cement ratio of 20 to...
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