Unofficialllyy
  • Unofficialllyy
Barry is trying to calculate the distance between point E(3, 1) and point F(4, 7). Which of the following expressions will he use?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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Unofficialllyy
  • Unofficialllyy
My answer choices are: A. \[\sqrt{(7-1)^2+(4-3)^2}\] B. \[\sqrt{(7-3)^2+(4-1)^2}\] C. \[\sqrt{(7-4)^2+(3-1)^2}\] D. \[\sqrt{(4-7)^2+(1-3)^2}\]
Unofficialllyy
  • Unofficialllyy
But I did it myself and I got \[\sqrt{(4-3)^2+(7-1)^2}\]
anonymous
  • anonymous
|dw:1432913970733:dw|

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More answers

Unofficialllyy
  • Unofficialllyy
I don't need to solve it.
Unofficialllyy
  • Unofficialllyy
I need to find out which expression he will use to find the distance between (3,1) and (4,7)
Unofficialllyy
  • Unofficialllyy
I'm pretty sure my answer is right, but it isn't one of the answer choices.
anonymous
  • anonymous
Ah that depends on which you chose as X1, Y1 and X2, Y2
anonymous
  • anonymous
try it in reverse. i.e. chose 4, 7 as X1, Y1, and 3,1 as X2 , Y2
Unofficialllyy
  • Unofficialllyy
I did, there is no answer choice that starts with 1
anonymous
  • anonymous
Your right the only options for X2 are 3 or 4, and since the distance formula starts with (x2 -x1) then none of the above qualify!
anonymous
  • anonymous
except maybe d?
Unofficialllyy
  • Unofficialllyy
I don't have a none of the above option though :(
Unofficialllyy
  • Unofficialllyy
Yeah maybe. I'll try it. Thanks for helping!
anonymous
  • anonymous
|dw:1432914891064:dw|
anonymous
  • anonymous
no, no matter which point you make as X1, y1 and x2, y2, none of the above are an option
Unofficialllyy
  • Unofficialllyy
Yeah so i'm confused on what to choose
anonymous
  • anonymous
sometimes, textbooks get it wrong, just take down both solutions that I have given and hand to your teacher
Unofficialllyy
  • Unofficialllyy
I will. Thank you!
anonymous
  • anonymous
you're very welcome!
anonymous
  • anonymous
There is a good lesson in this, you done everything right, and if at the end of the day, you have done things right and the answer still doesnt come out, then you have to have confidence in what you do.

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