A boat can travel at a speed of 12km/h in still water. If it takes three hours to go 15 km upstream and back, find the speed of the current, giving your answer to 2 decimal places. What is the rate of the boat?
How long does it take for the boat to go back and forth the stream?

Let x be the speed of the current.

You are assembling pieces of an iron gate to complete a fence. the finished gate will look like the one below. in order to assemble the gate it is important to under how the pieces are related. part 1: how are pies 1 and 2 in the archway related? part 2: how are the rectangular sections 5 and 6 in the center of the gate related to each other?

To which sets of numbers does -12 belong? choose all answers that are correct. a) natural numbers b) integers c) real numbers d) irrational numbers

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.