Question

Asked Feb 10, 2020

1 views

Maria takes a boat upstream for 9 hours. Her return trip downstream only took 6 hours. If the river she is on has a current of 1 mile per hour, how fast does her boat move in still water?

Upstream

Let the velocity of Maria' boat in still water be **v **miles/hr, and the velocity of the water be v_{w}

The relative velocity of Maria when she is travelling upstream will be

=v − v_{w}

=v − 1

So, the distance travelled upstream in time t = 9 hours, is:

d = (v−1)×9

Downstream

The relative velocity of Maria when she is travelling downstream will be

=v + vw

=v + 1

So, the di...

Tagged in

Find answers to questions asked by student like you

Show more Q&A

Q: 116c) and 116d)

A: Part (a):

Q: Use only toolkit functions for this problem. (x + 3)3 – 5 The graph of f(x) can be obtained from the...

A: The given function is

Q: How do you answer A and B?

A: Click to see the answer

Q: a garden table and bench cost $750 combined. The table is 2x the cost of the bench. How much is the...

A: Let the cost of the bench = xSo, the cost of the table= 2x

Q: Find (fo g)(x) and (g o f)(x) and the domain of each. f(x) =x+ 10, g(x)=x- 10 (fo g)(x) = (Simplify ...

A: Click to see the answer

Q: Find the point on the xx-axis that is equidistant from the points (6,1)(6,1) and (3,7)

A: The given points are (6, 1) and (3, 7). Let C be the point on the x-axis with coordinated (x, 0).

Q: Solve the following system of equations. (Enter your answers as a comma-separated list. If there are...

A: Here the given equations are:

Q: A pair of women's running shoes cost $110 in 2004 and the same shoes cost $120 in 2008 due to infl...

A: Click to see the answer

Q: B) which box is the correct?

A: Given: