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Step-by-step explanation:
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Answer:
XZ = XY+ YZ
8.9=5.5+2c
2c= 8.9-5.5
2c=3.4
c=1.7
YZ = 2c=3.4
Step-by-step explanation:
787-10=777
777/3=259
259 multiples of 3
Imposible triangle, lagest side must be > sum other sides.