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Igoryamba
2 years ago
13

the number of patients treated at dr. whites dentist office each day for nine days is 4, 4, 5, 4, 4, 5, 5, 5, 4. find the mean,

median, mode, and range. round to the nearest 10 if necessary
Mathematics
1 answer:
GalinKa [24]2 years ago
3 0
Mean is 4.4 which is the average. median and mode is 4. Range is 1.
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PLEASE HELP/ANSWER! From 1980 to 1990, Lior’s weight increased by 25%. If his weight was k kilograms in 1990, what was it in 198
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The weight in 1980 is \frac{4k}{5} kilograms

<em><u>Solution:</u></em>

From 1980 to 1990, Lior’s weight increased by 25%

His weight is "k" kilograms in 1990

<em><u>To find: weight in 1980</u></em>

This is a percentage increase problem

Let "x" be the weight in kilograms in 1980

<em><u>The percentage increase is given by formula:</u></em>

\text{Percentage increase } = \frac{\text{Final value - initial value}}{\text{initial value}} \times 100

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Initial value in 1980 = x

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<em><u>Substituting the values in formula,</u></em>

25 = \frac{k-x}{x} \times 100\\\\25x = 100(k-x)\\\\x = 4(k-x)\\\\x = 4k - 4x\\\\5x = 4k\\\\x = \frac{4k}{5}

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