britt james asked 9/27/2011 X_____ -4z=1 2x-y-6z=4 2x+3y-2z=8 Use substitution method find complete solution?
britt james asked 8/29/2011 Kiran drove from Tortula to catctus a distance of 280mi. She increased her speed by 15mi/h for the 384 mi trip from cactus to dry Junction. If the totsl trip took 8 hours,what was her speed from tortula to cactus?
