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Mathematics, 24.07.2019 05:00 eddie85
Abookkeeper needs to post the cost of a desk and chair into his records. the cost of the desk was five times the cost of the chair. the total cost of both the desk and chair was $720. what was the cost of the chair?
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An annual marathon covers a route that has a distance of approximately 26 miles. winning times for this marathon are all over 2 hours. the following data are the minutes over 2 hours for the winning male runners over two periods of 20 years each. earlier period 14 12 15 22 13 10 19 13 9 14 20 18 16 20 23 12 18 17 6 13 recent period 7 11 7 14 8 9 11 14 8 7 9 8 7 9 9 9 9 8 10 8 (a) make a stem-and-leaf display for the minutes over 2 hours of the winning times for the earlier period. use two lines per stem. (use the tens digit as the stem and the ones digit as the leaf. enter none in any unused answer blanks. for more details, view how to split a stem.) minutes beyond 2 hours earlier period 0 1 2 (b) make a stem-and-leaf display for the minutes over 2 hours of the winning times for the recent period. use two lines per stem. (use the tens digit as the stem and the ones digit as the leaf. enter none in any unused answer blanks.) minutes beyond 2 hours recent period (c) compare the two distributions. how many times under 15 minutes are in each distribution
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Mathematics, 21.06.2019 22:30
Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by ââ4 to get ââ16x ââ 4y = ââ80 multiply the second equation by ââ1 to get ââ4x ââ y = ââ20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by ââ1 to get ââ2x ââ 4y = ââ14
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Abookkeeper needs to post the cost of a desk and chair into his records. the cost of the desk was fi...
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