## anonymous one year ago ~!!WILL FAN AND MEDAL FOR The bEST HELP!!~ Look at points C and D on the graph: A coordinate plane graph is shown. Point C is at negative 5 comma negative 1. Point D is at 0 comma 3. A segment connects the two points. What is the distance (in units) between points C and D? Round your answer to the nearest hundredth. 5.50 units 6.40 units 9.00 units 41.00 units

1. anonymous

2. anonymous

@_kasey

3. anonymous

@David27

4. anonymous

Just use the distance formula $\large \sf d=\sqrt{(x_{2}-x_{1})^{2}+(y_{2}-y_{1})^{2}}$

5. anonymous

umm

6. anonymous

Yes?

7. anonymous

i not good with this

8. anonymous

Ok...

9. anonymous

i mean at all

10. anonymous

0_0

11. anonymous

Yeah. So...?

12. anonymous

nvm ill just guest on it

13. anonymous

my guest was 6.40

14. anonymous

sorry i was helping someone. one sec

15. anonymous

6.48 units

16. anonymous

did you guess right?

17. anonymous

idk i just followed the boxes

18. anonymous

okay so do you know how to use the distance formula?

19. anonymous

d=(x2−x1)2+(y2−y1)2−−−−−−−−−−−−−−−−−√

20. anonymous

|dw:1438108994157:dw|

21. anonymous

22. anonymous

it's fine haha, that's the formula. now you just need to plug in the coordinates.

23. anonymous

mmmk

24. anonymous

25. anonymous

so the distance is in units right

26. anonymous

wait theres no numbers in the question

27. anonymous

yes, okay so x2=0 x1=-5 y2=3 y1=-1

28. anonymous

:O

29. anonymous

there are, they're the points on the graph

30. anonymous

|dw:1438109310692:dw|

31. anonymous

|dw:1438109342451:dw|

32. anonymous

so i just solve it from there

33. anonymous

yes

34. anonymous

|dw:1438109447004:dw|

35. anonymous

right?

36. anonymous

well, two negatives equal a positive so 0--5=5 and 3--1=4

37. anonymous

|dw:1438109550865:dw|

38. anonymous

yeah

39. anonymous

|dw:1438109615688:dw|

40. anonymous

mkk

41. anonymous

|dw:1438109670630:dw|

42. anonymous

plus or minus

43. anonymous

yeah! so 25+14=39

44. anonymous

plus

45. anonymous

46. anonymous

cause it has to be to the nearest hundredth

47. anonymous

no, what is the square root of 39?

48. anonymous

|dw:1438109832801:dw|

49. anonymous

19.5

50. anonymous

nope

51. anonymous

hmmm

52. anonymous

do you have a calculator?

53. anonymous

yes one sec

54. anonymous

type in my last drawing

55. anonymous

6.24

56. anonymous

Yes!

57. anonymous

|dw:1438109949897:dw|

58. anonymous

^O^

59. anonymous

but it has to round up so 6.40 units is your answer

60. anonymous

thx

61. anonymous

no prob

62. anonymous

good job :)

63. anonymous

ur great!

64. anonymous

i only have one more question

65. anonymous

okay but I have to go in a couple minutes so we have to hurry

66. anonymous

The sets of numbers 7, 24, 25 and 9, 40, 41 are Pythagorean triples. Use what you know about the Pythagorean Theorem and explain or show why they are Pythagorean triples. Be sure to show your work for each set of triples!

67. anonymous

I never learned this.. hm

68. anonymous

me either

69. anonymous

70. anonymous

ok thx

71. anonymous

of course