Let A=(2,8,5) B=(6,0,3) C=(4,7,9) 1.Find the vectors a.) u=⃗ BA b.) v=⃗ BC c.) w= AC. 5. Find the projection of a. u onto v.

The table below shows the approximate masses of a dust particle and a grain of pollen. dust particle 0.000000778 g grain of pollen 0.00000000155 g the mass of a dust particle can be estimated and written in the form a × 10^b, where a = 8 and b = the mass of a grain of pollen can be estimated and written in the form a × 10^b, where a = 2 and b = based on the estimates, the mass of a dust particle is approximately blank times larger than the mass of a grain of pollen.