A cyclist bikes at a constant speed for 19 miles. He then returns home at the same speed but takes a different route. His return trip takes one hour longer and is 24 miles. Find his speed.

Landon wrote that 3−2.6=4. which statement about his answer is true?

Which expression demonstrates the use of the commutative property of addition in the first step of simplifying the expression (-1+i)+(21+5i)+0

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?