## anonymous one year ago I have 3 math questions i need help with please help me

1. anonymous

5. If A(5, 5), B(3, 3), C(6, 8), and D(-3, 4), what is the length of AB? Round to the nearest tenth. (Points : 1) Question 6. 6. If A(5, 5), B(3, 3), C(6, 8), and D(-3, 4), what is the length of BC? Round to the nearest tenth. (Points : 1) Question 7. 7. If A(5, 5), B(3, 3), C(6, 8), and D(-3, 4), what is the length of CD? Round to the nearest tenth. (Points : 1)

2. anonymous

@pooja195

3. anonymous

do you got to ca

4. anonymous

Distance formula is $d=\sqrt{(x _{2}-x _{1})^2+(y_{2}-y_{1})^2}$

5. anonymous

Just take the x's and y's of the two points and plug them in to find the distance between them :)

6. anonymous

i really don't understand how to do this ive been on this question for the pass hour and i cant get it wrong

7. anonymous

Just plug the values into the formula I provided. The equation with the larger x will be the x2 and y2 equation.

8. anonymous

Would you like me to walk you through the first one?

9. anonymous

10. anonymous

So we're trying to find the distance between A and B. A is (5,5) and B is (3,3). Since 5 is greater than 3, A is going to be our x2, y2 equation and B is our x1, x2 equation. Now we just plug them into the formula. $d=\sqrt{(5-3)^2+(5-3)^2}$ Solve the parentheses $d=\sqrt{(2)^2+(2)^2}$ Find the square of it$d=\sqrt{4+4}$Add$d=\sqrt{8}$ Since we're rounding to the nearest hundredth, that means that we're just gonna plug this into a calculator to find the result.

11. anonymous

the first one is 6 right?

12. anonymous

I just did the first one.

13. anonymous

I did #5, as that is the first one on the list

14. anonymous

oh okay lol i think i can do the last two or at least try

15. anonymous

How about this? You set up the second one and if I need to, I'll correct you and help you through #6. After that, you do #7 on your own

16. anonymous

okay i'll try

17. anonymous

I don't know what to do after the first part i got 20. I don't think its right im sorry im like really bad at math

18. anonymous

What did your initial setup look like?

19. anonymous

I mean what did you fill in for $d=\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2 }$

20. anonymous

yeah with 5 and 8

21. anonymous

and i got 20

22. anonymous

Did it look something like this?$d=\sqrt{(6-3)^2+(8-3)^2 }$

23. anonymous

yeah but not those numbers

24. anonymous

Why not those numbers? We're doing #6 are we not?

25. anonymous

28?

26. anonymous

28? What about 28?

27. anonymous

The answer to the first step?

28. anonymous

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

29. anonymous

I got 28 again

30. anonymous

$d=\sqrt{(3*3)+(5*5)}$

31. anonymous

28 is it 28?

32. anonymous

How in the world are you getting 28? And are you not paying attention to my posts? I'm helping you through it. I am seriously confused as to how you're getting 28

33. anonymous

I dont know im using my calculator but i don't understand this thanks for helping though i appreciate it

34. anonymous

Right now we have this$d=\sqrt{(3*3)+(5*5)}$ Can you solve the parentheses?