radomes.openskiesproject.org
amtee amtee
  • 01-12-2014
  • Mathematics
Answered

substitution method-

r = -3s

r= 10 - 4s

Verified Answer :

luana
luana luana
  • 01-12-2014

\(r=-3s\\r=10-4s\\\\-3s=10-4s\ \ \ \ |add\ 4s\\-3s+4s=10\\s=10\\\\r=-3\cdot10=-30\)

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