I believe that none would be irrational; an irrational number can't have terminating or repeating decimals. 3/8= .375, (56/8)^4=7^4=2,401, 36^4/4^4=6561, and .19 repeating is a repeating decimal.

4 0

4 years ago

A group of campers uses a map of a state park to plan their trip to and from the campsite. The map looks like a grid in which ea

stealth61 [152]

Hi,

Departure point : (4, 5)
They are first heading west, to go to the (2,5). They made 2 km.
Then they are heading north, to go to (2,8) -> campsite. They made 3 km

To return to departure point, the make the choice to walk in straight line :

$d = \sqrt{(4 - 2)^{2} + (5 - 8)^{2}} \\ \\ d = \sqrt{4 + 9} \\ \\ d = \sqrt{13} \\ \\d \approx 3.60\;km$

In total : they walked : 2 + 3 + 3.60 = 8.60 km

4 0

3 years ago