Mathematics
24.02.2020 02:15
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Write down three intergers all less than 25 whose range is 10 and mean is 13
Write down three intergers all less than 25 whose range is 10 and mean is 13
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mdaniella522
4,9(85 marks)
1) b^2 - 4ac = ( -2 )^2 - 4×( 0.5 ) × 2 = 4 - 4 = 0;
2) b^2 - 4ac =( -5)^2 - 4×2×20 = 25 - 160 = - 135 ;
2) b^2 - 4ac =( -5)^2 - 4×2×20 = 25 - 160 = - 135 ;
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