Is 15 yards to 18 yard increase or decrease

Find the midpoint m of z1=(8+5i) and z2=(12+3i)

The following division is being performed using multiplication by the reciprocal find the missing numbers is 5/12 divided by x/3 equals 5/12 times x/10 equals 1/x

Consider the set of all four-digit positive integers less than 2000 whose digits have a sum of 24. what is the median of this set of integers?