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cluponka [151]
3 years ago
15

Distance between points 4,6 8,9 to the nearest tenth

Mathematics
1 answer:
almond37 [142]3 years ago
7 0

Answer:

The distance between (4,6) and (8,9) is 5 units

Step-by-step explanation:

The given points are:

(4,6)  and (8,9)

The distance formula is used to calculate distance between two points

d = \sqrt{(x_2-x_1)^{2}+(y_2-y_1)^{2} } \\Putting\ the\ points\\d = \sqrt{(8-4)^{2}+(9-6)^{2} }\\ = \sqrt{(4)^{2}+(3)^{2} }\\=\sqrt{16+9}\\=\sqrt{25}\\=5\ units

Therefore the distance between (4,6) and (8,9) is 5 units ..

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Answer:

The new mean = 3 × (the old mean) = 150

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µ = 50 and σ = 5

The mean is the sum of variables divided by the number of variables.

Mean = (Σx)/N = µ = 50

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N = number of variables

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The standard deviation is the square root of variance. And variance is an average of the squared deviations from the mean.

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If every score is multiplied by 3, it is logical to reason that the average of the new set of numbers also is 3× the old average.

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