In still water, a boat averages 9 miles per hour. It takes the same amount of time to travel 28 miles downstream, with the current, as 8 miles upstream, against the current. What is the rate of the water’s current?

What is the value of the expression below? (81^2)^1/8

If i have 20$ and i gave 5$ away how much i got

Scenario: susan wants to make 2 square flags to sell at a crafts fair. the fabric she wants to buy is 3 meters wide. she doesn't want any fabric left over. what's the least amount of fabric she should buy? question: which equation will susan solve her problem? note: let x represent the length of 1 side of the flag. options: 1) 2x^2 = 4x 2) 8 +2x = 2(4x) 3) 2 * 2 = 4 * 2 4) 4x^2 -2x = 0