Question

What is the length of BC? Round to the nearest hundredth

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A. 4.24
B. 4.83
C. 5.75
D. 6.09

Okay, for this I got 5.65? not 5.75? Could someone explain to me how to get the correct answer? I plugged in the numbers to the distance formula: D= sqrt(x2-x1)^2+(y2-y1)^2 and this is what I did:

d = sqrt(1-5)^2+(-2-2)^2
d = sqrt(-4)^2 + (-4)^2
d = sqrt(-16+-16)
d = sqrt(-32)
d = sqrt(5.65)

what did I do wrong, can someone please help me? I would really appreciate it! :)

Answer 1

lets see

Answer 2

you want to use the distance formula ?

Answer 3

yes

Answer 4

distance formula :
distance between two points : (x1, y1) and (x2, y2)

d = \(\sqrt{(x2-x1)^2+(y2-y1)^2}\)

Answer 5

distance between BC : (5, 1) and (2, -2)

d = ?

Answer 6

oh, okay I see, then that means d = sqrt(2-5)^2+(-2-1)^2

Answer 7

right?

Answer 8

Perfect !

Answer 9

and d = sqrt(2-5)^2+(-2-1)^2
d = sqrt(-3)^2+(-3)^2
d = sqrt(9+9)
d = sqrt(18)
d = sqrt(4.24)

:)

Answer 10

is that right?

Answer 11

thats right if you remove sqrt there,

d = 4.24

;p

Answer 12

ohh, lol right! :D

Answer 13

good work :)

Answer 14

Thanks for corrceting me

Answer 15

np yw :D