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Mathematics 15 Online
OpenStudy (rz172):

COULD SOMEONE CHECK MY ANSWER?

OpenStudy (rz172):

OpenStudy (welshfella):

do you know the formula for the distance between 2 points given their coordinates?

OpenStudy (welshfella):

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OpenStudy (welshfella):

distance between the 2 points = sqrt [ (y2 - y1^2 + (x2-x1)^2] - its really the the pythagoras theorem

OpenStudy (rz172):

Do I have to draw that?

OpenStudy (ben00):

Are these questions easy? Because I don't know the answer.

OpenStudy (welshfella):

No just use the formula for the lines for example the distance AB = sqrt ( (300-0^2) + (400-0)^2) = sqrtr ( 300^2 + 400^2) = sqrt ( 250,000)

OpenStudy (rz172):

I don't know either. I kind of need the answer but i'm not sure if someone can give me it, but like by showing me how to do it.

OpenStudy (ben00):

So the answer is 250,000?

OpenStudy (welshfella):

what is the square root of 250,000 - use ur calculator.

OpenStudy (welshfella):

no 250,000 is not the answer to the whole program The square root of 250,000 is the length of AB

OpenStudy (welshfella):

* whole problem

OpenStudy (welshfella):

to find the length of the vertical and horizontal lines is easy Just subtract the y or x coordinates as appropriate.

OpenStudy (welshfella):

@Rz172 - what is the square root of 250,000? this will give you the distance from A to B

OpenStudy (welshfella):

I#d like you to get involved in the solution - you'll learn more that way.

OpenStudy (welshfella):

I see your second image gives the distance formula . I missed that.

OpenStudy (welshfella):

as you saide AB = 500 Now the other sloped line is BC

OpenStudy (welshfella):

Now you need to plug in the values for points B and C into the distance formula x1 = -800 ,x2 = 400, y1 = 800, y2 = 300 -this will give you the distance from B to C

OpenStudy (welshfella):

the distance CD and DA are easy to work out for the vertical line Cd just subtract y coordinates - that is 800 - 0 and for DA its 800 - 0

OpenStudy (welshfella):

You asked for your answer to be checked. I cant see any answer.

OpenStudy (rz172):

Okay wait.

OpenStudy (welshfella):

finla answer is not 2600 what do you get for each line AB = 500 what about BC, CD and DA?

OpenStudy (rz172):

Is it 3,400?

OpenStudy (welshfella):

500 + 800 + 800 + 1300 yes

OpenStudy (awesomemiss):

its 3,400 i believe

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