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11. 6 4/5 is the same as 34/5. Times 4 is 136. 136/5 miles.

12. I found this answer on a different website on the same question. 5/32

13. 5 times 5 is 25. The answer is 25/6 or 4 1/6.

14. 1/2 x 7

15. Keisha. Her fraction and amount of days are greater than Patty's meaning she will run a much greater distance.

16. 1/2 times 3 is 1 1/2

17. 3/7 times 2/3 is 6/21.

18. 9/4.

19. True

20. True

i am sure it will be 90 degrees.

step-by-step explanation:

there are lots of ways.   pick's theorem tells us if the vertices are lattice points the area a is

a = b/2 + i - 1

where b is the number of boundary lattice points and i is the number of interior lattice points.

in the figure i count b=16, i=50 so

a = 8 + 50 - 1 = 57

let's try the shoelace formula.   the area is half the sum of the cross products of the sides.  

a(-2,6)   -2(2)-6(-5) = 26

b(-5,2)   -5(-3) - 2(-2) = 19

c(-2,-3) -2(-3) - (-3)(4) = 18

d(4,-3)   4(3) - (-3)(5) = 27

e(5,3)   5(3) - 3(1) = 12

f(1,3)     1(6) - 3(-2) = 12

a(-2,6)

each of the cross products is twice the area of the triangle with the associated side and one vertex the origin. so the area of abo=26/2=13.

area = (1/2) (26 + 19 +   18 + 27 + 12 + 12) = 57

that checks!