Easy Ten Points need help?

Question

A speedboat takes 1 hour longer to go 24 miles up a river than to return. If the boat cruises at 18 miles per hour in still water, what is the rate of the current?

Answer 1

no. 2

let p^(-1/3) be s

s^2 - s - 30 = 0

use the formula or completing squares method

s^2 - s = 30

s^2 - s - 3/2 = 30 - 3/2

(s - 3/2)^2 = 28.5

square root both sides

s-3/2 = plus or minus 5.3385

s = -6.84, +6.84

s = t^(-1/3)

substitute. but i think you get the picture about how to address the naumber

hpoe this helps. as for the first number, email me if you really need me to solve it for you.

Answer 2

easy easy easy...

1. t=5/29

2. t=9/24

3. t=30

There you go I did that same problem friday