Mathematics, 24.06.2019 02:00 ellettm
Ametalworker has a metal alloy that is 20% copper and another alloy that is 65% copper. how many kilograms of each alloy should the metalworker combine to create 100 kg of a 56% copper alloy? the metalworker should use _kilograms of the metal alloy that is 20% copper and _kilograms of the metal alloy that is 65% copper. (type whole numbers.)
Answers: 1
Mathematics, 21.06.2019 16:30
An automated water dispenser fills packets with one liter of water on average, with a standard deviation of 5 milliliter. the manual says that after a year of operation the dispenser should be tested to see if it needs recalibration. a year later a number of filled packets are set aside and measured separately. it is found that the average packet now contains about 0.995 liters. does the dispenser need calibration? explain your answer.
Answers: 2
Mathematics, 21.06.2019 20:30
List x1, x2, x3, x4 where xi is the left endpoint of the four equal intervals used to estimate the area under the curve of f(x) between x = 4 and x = 6. a 4, 4.5, 5, 5.5 b 4.5, 5, 5.5, 6 c 4.25, 4.75, 5.25, 5.75 d 4, 4.2, 5.4, 6
Answers: 1
Mathematics, 21.06.2019 23:30
The bottom of ignacio's desktop is 74.5cm from the floor. ignacios sits in his adjustable chair, and the tops of his legs are 49.3cm from the floor. each clockwise rotation of the knob on the chair raises ignacio's legs by 4.8cm. write an inequality to determine the number of clockwise rotations, r, ignacio could make with the knob without his legs touching the desk.
Answers: 3
Mathematics, 21.06.2019 23:50
How are algebraic expressions evaluated using substitution?
Answers: 1
Ametalworker has a metal alloy that is 20% copper and another alloy that is 65% copper. how many kil...
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