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Mathematics 7 Online
OpenStudy (anonymous):

Trapezoid pqrs and trapezoid wxyz shown below are similar. What is the perimeter of trapezoid wxyz?

OpenStudy (anonymous):

OpenStudy (anonymous):

please help!!

OpenStudy (anonymous):

is 20 the correct answer?

OpenStudy (anonymous):

let me see

OpenStudy (anonymous):

its 24 dear

OpenStudy (anonymous):

I guess its same by factor rule

OpenStudy (anonymous):

XY / QR = WX / PQ 8/12 = WX/9 2/3 = WX/9 3WX = 2 * 9 3 WX = 18 WX = 18/3 WX = 6

OpenStudy (anonymous):

then u have to find the length of WZ

OpenStudy (anonymous):

the choices are a: 6 b: 20 c: 24 d: 36

OpenStudy (anonymous):

yep 24,there it is ^^

OpenStudy (anonymous):

ok!!

OpenStudy (anonymous):

thank you so much!!

OpenStudy (anonymous):

WZ/PS = XY/QR WZ/6 = 8/12 WZ/6 = 2/3 3WZ = 6 * 2 3WZ = 12 WZ = 12/3 = 4

OpenStudy (anonymous):

we knowed that WX=YZ=4

OpenStudy (anonymous):

wx= yz =6

OpenStudy (anonymous):

opss.. sorry, misread :)

OpenStudy (anonymous):

oh thats ok

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