Mathematics, 03.04.2020 05:35 TJxx187
Devin is training for a competitive race by swimming and running. He covers a total distance of 9 km by swimming for 45 minutes and running for 20 minutes. The following day he swims for 30 minutes and runs for 40 minutes, covering a total of 14 km. Which system of linear equations can be used to find Devin's swimming rate (x) and his running rate (y) in kilometers per hour? A) 3 4 x + 1 3 r = 9 1 2 x + 2 3 y = 14 B) 3 4 x + 1 3 y = 14 1 2 x + 2 3 y = 9 C) 3 4 x + 1 3 y = 9 1 2 x − 2 3 y = 14 D) 3 4 x + 1 3 y = 23 1 2 x + 2 3 y = 23
Answers: 3
Mathematics, 21.06.2019 16:30, ezapata21
You are making a battery for a science project. you have copper wire for your first electrode. you need to choose a conductor, a second electrode, and a device to plug into your battery. you have already chosen a lemon conductor. complete each statement below about the options that include a lemon conductor.
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Mathematics, 21.06.2019 19:20, hahah265
Suppose that a households monthly water bill (in dollars) is a linear function of the amount of water the household uses (in hundreds of cubic feet, hcf). when graphed, the function gives a line with slope of 1.65. if the monthly cost for 13 hcf is $46.10 what is the monthly cost for 19 hcf?
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Find the values of the variables in the kite
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Mathematics, 22.06.2019 00:00, jair512872
What is the value of x in this triangle? a. 53° b. 62° c. 65° d. 118°
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Devin is training for a competitive race by swimming and running. He covers a total distance of 9 km...
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