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

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. what distance from city a is the point where the truck and the car will meet?

The candy store is having a 30% off sale. emma is going to buy $7.50 worth of candy.how much will she pay after the discount