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asambeis [7]
3 years ago
14

25 POINTS!!!!!!!!! ALGEBRA 2 STATISTICS QUESTION!!!!!!!!!!!!!!

Mathematics
1 answer:
Serga [27]3 years ago
6 0
A median is 65 inches and a standard deviation is 1.7:
a.   65 + 1 SD = 65 + 1.7 = 66.7 in
It means that there are : 100% - ( 50% + 34% ) = 100% - 84% = 16% students taller than 66.7 inches.
b.  Heights between 61.6 in and 68.7 in are within 2 standard deviations:
13.5% + 34% + 13.5% + 34% = 95%
0.95 * 300 = 285
There are 285 students between 61.6 in and 68.7 in tall. 
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What is 752988 rounded to the nearest thosand And 23081 rounded to the nearest ten thosand?
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3 years ago
Kevin sold 2 unicycles and 1 bicycle for a total of $110. Greg sold 4 unicycles and 3 bicycles for a total cost of $268. What is
RSB [31]
Simultaneous Equations

2u +   b = $110
4u + 3b = $268

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2b - 3b = -b
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-b = -$48
b = $48

If you want to find out what a unicycle costs...
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Balance the equation, whatever happens on one side, happens on the other.
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