1.Find the point at which the line with parametric equation x=2+3t, y=-4t, z=5+t intersects the plane 4x+5y-2z=18
2.One of your crews measured the earth pressure for a new dam construction site, and it looked like the measured earth pressure is much lower than the expected value. What do you think the problem could be? How are you going to corrrect the situation?
3.An engine cooling system initially contains 16 quarts of a mixture of water and antifreeze, which is 30 % antifreeze on a volume basis. if its desire to be removed and replaced with pure (100%) antifreeze?