Answer:
The speed of the boat in still water u = 8
Step-by-step explanation:
Let speed of the boat = u
Speed of the current = v = 4
Given that the first boat to travel 3 miles upstream and back in a total 1 hour.
So
Since v = 4
By solving above equation
u = 8 , - 2
Since u = -2 is not valid.
⇒ u = 8
This is the speed of the boat in still water.
11
—-
6 making it 1
1–—- i think
6
When you write terms in denominator on numerator, sign of indices changes.
Answer:
circumference = 10 = 31.42 units (nearest thousandth)
Step-by-step explanation:
diameter of a circle (d) = 2
circumference of a circle = 2r = d
Therefore, circumference = 10 = 31.42 units (nearest thousandth)