Mathematics, 06.01.2020 02:31 lizethdominguez037
High grade steel consists of 85% iron and 15% magnese. low grade steel consists of 67% iron and 33% mag ese. nasa orders 500 tons of steel and specifies that it must be in the proportion 80% iron and 20% steel. how many tons of high grade and low grade steel must you melt together to create steel that matches nasa’s requirements?
Answers: 2
Mathematics, 21.06.2019 16:30, cheergirl2854
Cassie is traveling 675 miles today to visit her brother and his family. so far, she has stopped for gas three times. at the first stop, she put in 7.1 gallons of gas and paid $23.79. at her second stop, she put in 5.8 gallons of gas and paid $19.08. and, at the third stop, 6.6 gallons and paid $20.39. at which stop did casey pay the most for gas?
Answers: 1
Mathematics, 21.06.2019 22:20, skyhighozzie
(b) suppose that consolidated power decides to use a level of significance of α = .05, and suppose a random sample of 100 temperature readings is obtained. if the sample mean of the 100 temperature readings is x⎯⎯ = 60.990, test h0 versus ha and determine whether the power plant should be shut down and the cooling system repaired. perform the hypothesis test by using a critical value and a p-value. assume σ = 5. (round your z to 2 decimal places and p-value to 4 decimal places.)
Answers: 2
High grade steel consists of 85% iron and 15% magnese. low grade steel consists of 67% iron and 33%...
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