Atruck driver traveled at an average speed of 64 miles per hour on a 200-mile trip to pick up a load of freight. on the return trip (with the truck fully loaded), the average speed was 38 miles per hour. find the average speed for the round trip. (round your answer to one decimal place.)

Iknow its nothing to do with education, but what type of thing should i wrote here? ? : ) its for mcdonald's btw.

What is 0.000008 meters in scientific notation

The students at jefferson middle school are raising money for a charity by selling t-shirts and hats. the number of t-shirts sold was 3 times the number of hats. the profit was $5 for each t-shirt sold and $2.50 for each hat sold. the students raised $840 for the charity. they used the system below to analyze their success and found the solution to be (144, 48). 5x+2.50y=840 x=3y how much did they earn from t-shirt sales?