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slavikrds [6]
2 years ago
11

Find the distance between the points (-4,-3) and (-1,7) round to the nearest tenth

Mathematics
1 answer:
Marizza181 [45]2 years ago
5 0

Answer:

\sqrt{109} units

Step-by-step explanation:

To find the distance between two points on a graph, we use the distance formula d=\sqrt{(y_2-y_1)^2+(x_2-x_1)^2} where d is the distance between points (x_1,y_1) and (x_2,y_2)

For this problem, we will identify (x_1,y_1)\rightarrow(-4,-3) and (x_2,y_2)\rightarrow(-1,7):

d=\sqrt{(y_2-y_1)^2+(x_2-x_1)^2}\\\\d=\sqrt{(7-(-3))^2+(-1-(-4))^2}\\\\d=\sqrt{10^2+3^2}\\\\d=\sqrt{100+9}\\\\d=\sqrt{109}

Therefore, the distance between (-4,-3) and (-1,7) is \sqrt{109} units

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Why?


Lets choose any such set of size 4, say {2, 1, 1, 3}. we can sort it to get a sequence {1,1,2,3} which is one of our desired outcomes. So each such sorted sequence corresponds to one selection of size 4, with replacement and without considering order.


Number of such selections will be equal to number of solutions of following equation:


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(For more details on this see : Unordered sampling with replacement )


Number of possible outcomes = 6^4 = 1296


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