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Mathematics 69 Online
OpenStudy (anonymous):

Find the distance between the points given. Simplify all irrational answers. (4, 1) and (7, 5)

OpenStudy (anonymous):

Do you know the distance formula?

OpenStudy (anonymous):

No, sorry

OpenStudy (mathteacher1729):

related question: Do you know how to use the Pythagorean theorem?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

Thanks everyone

OpenStudy (shane_b):

I dropped the left parentheses when I typed it out...so it's \[d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\]

OpenStudy (mathteacher1729):

@scrappy do you have graph paper handy? if yes, this is a very easy problem. You basically plot your two points, create a right triangle, and find the hypotenuse. :)

OpenStudy (shane_b):

That's more work IMO but it works of course :)

OpenStudy (anonymous):

thank you

OpenStudy (mathteacher1729):

There's a quick illustration of what I mean. For points that are easy to plot you can always do this. The idea is to get a feel for the relationship between the variables (x distance, y distance) so you can do it for ANY points, even crazy ones like (-1,939, 23,297) and (1, -34,439,232).

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