martinezsantosa
martinezsantosa martinezsantosa
  • 02-05-2018
  • Mathematics
contestada

solve for y. triangle PQR is congruent to triangle DEF, PQ= 15, QR= 10, RP=8, and EF = 6y +4

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musiclover10045
musiclover10045 musiclover10045
  • 02-05-2018
congruent means that they are identical
 looking at the order of the letters in the triangles EF are the last 2 and QR are the last 2
 so EF should equal QR

we are told QR = 10 so EF needs to equal 10
 so we have 6y+4 = 10

now solve for Y

6y +4 = 10
 subtract 4 from each side:
6y = 6
 divide each side by 6
y = 1



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