Michael is going to the store 6 miles away. he rides his bike at 12 mph for the first half of the trip, then walks at 4 mph for the remainder. michael's average speed for the trip to the store is closest to:

6 mph

Explanation:

Total distance = 6 miles

Speed for the first half that means first 3 miles is 12 mph.

Speed for the next half that means next 3 miles is 4 mph.

Let t1 be the time taken to go for first half and then t2 be the time taken to go second half

By the use of formula for time.

time = distance / speed

total time taken in the 6 miles

Average speed is defined as the ratio of total distance traveled to the total time taken.

So, Average speed in the entire journey is given by

b) returns freshwater to the earth.

c) returns freshwater to the earth.c) occurs after condensation.

d) returns freshwater to the earth.c) occurs after condensation.d) roughly equal to the amount of evaporation.

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