anonymous 5 years ago hi everyone i need help for my assignment

1. anonymous

2. anonymous

There are a lot of questions, chai.

3. anonymous

You can't really answer the first two since you only have one point in each part. You need two points to calculate the distance. I can do the third point:$d=\sqrt{(3-(-1))^2+(-\sqrt{2}-\sqrt{2})^2}=\sqrt{4^2+(2\sqrt{2})^2}$$=\sqrt{16+8}=\sqrt{24}=2\sqrt{6}$

4. anonymous

In general, if you have two points in the x-y plane, such as$(x_1,y_1)$and$(x_2,y_2)$then the distance between them is$d=\sqrt{(x_2-x_1)^2+(y_2-y_2)^2}$You have to apply this formula each time you want to find the distance.

5. anonymous

For your triangle question, you draw up a set of axes and plot each of the three points per triangle. You then find the length of each side by using the distance formula, using the two points that are at the end of the line.

6. anonymous

Chai, I can't answer your last question either because you don't have a an ordered pair along with the slope. You'd need to have something like (-13,5) with slope m=1; you only have -13 and m=1, etc. Sorry...I take it your teacher didn't actually write anything down for you. It's not your fault.

7. anonymous

thanks for helping me, i am done answering my first two problem. im sorry i was mis write the exact actually thats not (31, 74) but (3, 1) (7. 4) and (0, 4)(-3, 0)

8. anonymous

You're welcome, Chai. Good luck.

9. anonymous

can i ask favor to you if its okay? please answer my third question in my first problem please. i dont know how to solve that because of the squaroot. if its okay

10. anonymous

I think I did...look above^^

11. anonymous

im sorry, i did not notice. ahmm, Hero can you answer about slope problem. problem is (-1, 3) m= 1 and (4, 0) m= 2/3

12. anonymous

All you have to do is plot your point, and then using the definition of the slope (i.e. rise over run) work out another point and plot it. You'll have two points and you can then draw your line. First point: start at (-1,3) and since m=1=1/1, for every 1 unit you move across, move up one unit. So you'd have another point at (0,4). Draw a line between these two points. For the second: start at (4,0) and since m=2/3, for every 3 points you move across to the right, move up two points. Your next point would then be at (7,2). Plot this and draw a line between the two points.

13. anonymous

I'm signing out for the rest of the day. If you need anymore help quickly, post your question in the "Ask a question" box. Good luck.

14. anonymous

thankyou hero, hero im finish drwing a triangle of my second problem but i dont know how to solve this using the formula of distance to find the length since they are three. the problem are: a, (2 -1) (4, 2) (5, 0) b, (0 -3) (3,0) (0 -4). can youu help me again to solve?

15. anonymous

Chai, you're going to have to find three distances for each triangle. To find each distance, you need to use the two points that are on either end of the side of the triangle you're looking at. For example, in the triangle I've attached, side 'a' will have the points (2,-1), (4,2) To find the distance, you have$a=\sqrt{(4-2)^2+(2-(-1))^2}=\sqrt{2^2+3^2}=\sqrt{13}$You need to repeat the process for the other two sides. If you have difficulty, post the question to someone who will be around now. Post this link http://openstudy.com/updates/4da16b9dd6938b0beb509e4d?source=email#/updates/4da16b9dd6938b0beb509e4d and they should be able to get to this post. Good luck.

16. anonymous

thankyou for the help hero. now im done doing my assignment. thankyou so much

17. anonymous

You're welcome Chai. Become a fan ;D

Find more explanations on OpenStudy