Find and explain the errors that were made in the following calculation of the coordinates of a midpoint. Then fix the errors and determine the correct answer. Write answers as decimals when needed.
Find the coordinates of the midpoint M of the segment with endpoints R(−2,3) and S(13, −7)

M = (
−2+3
2
,
13+(−7)
2
) = (
1
2
,
6
2
) = (
1
2
, 3)

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.