Given that 7a+14b−28c=−77, −3a−b+37c=63, and 2a+0b−26c=−42, solve the system of equations using gaussian elimination. state the solution as an ordered triple (a, b,c).

Which of the following are parts of a sphere

Which one ? is the answer and how to find this answer

How do i start to solve? would appreciate a walk-thru! a bird sitting 16ft above the ground in an apple tree dislodges an apple. after how many seconds does the apple land on the ground? (assuming that no branches will interfere with it's fall)