Mathematics, 27.06.2019 06:00 madisonromney2819
The concentration of the mixture obtained by mixing two solutions, a and b, is 6 2/3 %. the concentration of the second mixture obtained by mixing the same two solutions is 16.7%. find the concentration of each of the solutions a and b, if the first mixture is obtained by mixing them in 2: 7 ratio and the second is obtained by mixing them in 7: 3 ratio.
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Mathematics, 21.06.2019 20:30
Martha has a deck of cards. she has lost some of the cards, and now the deck only contains nine spades, eleven diamonds, eight clubs, and twelve hearts. martha predicts that whenever she draws a card from the deck without looking, she will draw a club one-fifth of the time. which activity would best allow martha to test her prediction? a. randomly draw a card from the box and see if it is a club. b. randomly draw a card. then, continue to draw another card until all eight clubs are drawn. c. randomly draw and replace a card 120 times. then, observe how close to 30 times a club is drawn. d. randomly draw and replace a card 100 times. then, observe how close to 20 times a club is drawn.
Answers: 1
Mathematics, 21.06.2019 21:50
Which is the graph of this function 3 square root of x plus one if
Answers: 1
The concentration of the mixture obtained by mixing two solutions, a and b, is 6 2/3 %. the concentr...
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