Sophie drove 225 miles south through the smoky mountains. snow during her return trip made her average speed on return trip 30 mph slower. the total driving time was 8 hour. find sophie' s average speed on each part of the trip.

The product of two negative rational numbers is always zero sometimes zero never zero

The weights of broilers (commercially raised chickens) are approximately normally distributed with mean 1387 grams and standard deviation 161 grams. what is the probability that a randomly selected broiler weighs more than 1,425 grams?

Aremote-controlled boat can travel at 4 feet per second in calm water. the boat traveled 48 feet with the current, and then it traveled 16 feet against the current in the same amount of time. how fast is the current?