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14 kilometers

Step-by-step explanation:

This is really about calculating perimeter.

So we need the lengths of all the sides of this right triangle.

Notice all the legs are  4 units or 4 kilometers

the hypotenuse  is  4*root(2)  because this is a 45-45-90 triangle.

so  

Perimeter =  4 + 4 + 4

let us add:   P =   4 + 4 + 4root(2) = 13.656854  km.

the nearest kilometer is 14 km.

B.) 14 kilometers

Step-by-step explanation:

To find the answer, simply add all of the distnces that Hakim runs together.

find the distances between:

Hakim’s house and Jacob’s

Jacob’s house and Kent’s

Kent’s house and Hakim’s

To find the first distance, use the distance formula using the coordinates (-3, 1)(Hakim’s house) and the coordinates (1, 5)(Jacob’s house)

I have attached the distance formula to this question.

when the distance formula is used you get the answer of about 5.7.

next, count the spaces from jacobs house to Kent’s house to get 4 units.

next, count the spaces between Kent’s house and Hakims house to get 4 units Again.

then, add all of the units together to get the perimeter of the triangle.

4 + 4 + 5.7 = 13.7

13.7 rounds up to 14

the final answer is 14

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