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Mathematics 7 Online
OpenStudy (anonymous):

What is the distance between points E and F?

OpenStudy (anonymous):

OpenStudy (ajprincess):

Can u plz tell me the coordinates of E nd F? @dedderick

OpenStudy (anonymous):

e: -3,2 and f:-2,4

OpenStudy (ajprincess):

ya good:)

OpenStudy (ajprincess):

the distance d between the points A=\((x_1,y_1)\) and B=\((x_2,y_2)\) can be found from the formula \[d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\] Does that help? @dedderick

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

i got 5.38

OpenStudy (ajprincess):

ya. i got 5.385=5.39

OpenStudy (anonymous):

how will i put that in a square root

OpenStudy (ajprincess):

put what?

OpenStudy (anonymous):

all the answers choices are square roots

OpenStudy (ajprincess):

hmm. \(\sqrt{(5.38)^2}\)

OpenStudy (anonymous):

not a answer choice

OpenStudy (ajprincess):

what is (5.38)^2=?

OpenStudy (anonymous):

28.94

OpenStudy (ajprincess):

wait a sec. \(d=\sqrt{(-2-(-3))^2+(4-2)^2}\) \(=\sqrt{(-2+3)^2+(4-2)^2}\)

OpenStudy (anonymous):

i got 4.12

OpenStudy (ajprincess):

I made a mistake when I calculated 5.39.

OpenStudy (anonymous):

k

OpenStudy (ajprincess):

sorry. nope it is right:(

OpenStudy (anonymous):

o

OpenStudy (ajprincess):

\((-2+3)^2=?\)

OpenStudy (anonymous):

equal 1

OpenStudy (ajprincess):

yup right:)

OpenStudy (ajprincess):

\((4-2)^2=?\)

OpenStudy (ajprincess):

@dedderick

OpenStudy (anonymous):

equal 4

OpenStudy (ajprincess):

ya right:)

OpenStudy (ajprincess):

\(\sqrt{1+4}=?\)

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