## anonymous one year ago 1. Find the distance between the points (2, -3) and (5, -4).

1. anonymous

@Nnesha

2. anonymous

okay so

3. Nnesha

distance formula $\huge\rm d=\sqrt{(x_2 -x_1)^2+(y_2-y_1)^2}$ plugin x's y's values :)

4. anonymous

okay.

5. Nnesha

x's and y's $\rm (x_1,y_1)(x_2 ,y_2)$

6. anonymous

$d=\sqrt{?}(5-2)^2+(-4--3)$

7. anonymous

idk how to do that thing where it puts it in there lol

8. Nnesha

it's okay i know what you mean and yes that' right

9. anonymous

no how to solve it

10. Nnesha

first solve the parentheses (5-2) and (-4-(-3)) and then take square

11. anonymous

d= square root of 9+-7

12. Nnesha

-4-(-3) = ??

13. anonymous

-7^2

14. anonymous

lol hang on that would be

15. anonymous

49

16. anonymous

so d= the square root of 58

17. anonymous

@Nnesha

18. anonymous

which is 7.6

19. anonymous

right?

20. Nnesha

no no no -4-(-3) first distribute -3 by negative sign and then combine them

21. anonymous

uhhhhhh whhaa

22. Nnesha

|dw:1439994778548:dw| ther is invisible one so multiply negative one times -3 and then add -4 there is negative sign you can't remove the parentheses ntill u multiply it with negative on

23. Nnesha

one *

24. anonymous

what the heck. never heard of that

25. anonymous

so -12^2

26. Nnesha

you never heard that you should multiply negative one by -3

27. Nnesha

what negative one times -3 = ?

28. anonymous

heck to the no

29. anonymous

3

30. Nnesha

calm down.....

31. Nnesha

okay so |dw:1439994946005:dw|

32. anonymous

-12

33. anonymous

ha sorry

34. Nnesha

why did you multiply -4 by 3 ? subtract it's -4+3

35. anonymous

-1

36. Nnesha

yep right so $\huge\rm \sqrt{(3)^2+(-1)^2}$

37. anonymous

screw this. i got like 20 more of em to do. whates one thing you dont understand. i got a 90 in the class anyways

38. anonymous

I've been trying to figure these out for like 2 years and I still have no clue.

39. Nnesha

3^2 is same as 3 times 3 and 1^2 is same as 1 times 1

40. Nnesha

take square of 3 and 1and then add them together that's it

41. anonymous

so 10

42. anonymous

then whatever the square root of 10 is

43. Nnesha

yes right!

44. anonymous

yea.