Answer:
1064 ft.
Step-by-step explanation:
Start by sketching out a figure to represent the situation, it should look something like this:
(See picture)
(Figure definitely not drawn to scale)
The angle marked in red measures 4.3°, then we can use the law of sines to solve for the height of the Eiffel Tower (represented as the variable x):
Rounding gives 1064 ft.
8.5 feet(12 inches per foot)= 102 inches total
There are 102 inches in 8.5 feet
To solve this we are going to use the formula for speed:
where
is the speed
is the distance
is the time
Let
be the speed of the boat in the lake,
the speed of the boat in the river,
the time of the boat in the lake, and
the time of the boat in the river.
We know for our problem that <span>the current of the river is 2 km/hour, so the speed of the boat in the river will be the speed of the boat in the lake minus 2km/hour:
</span>
We also know that in the lake the boat<span> sailed for 1 hour longer than it sailed in the river, so:
</span>
<span>
Now, we can set up our equations.
Speed of the boat traveling in the river:
</span>
But we know that
, so:
equation (1)
Speed of the boat traveling in the lake:
But we know that
, so:
equation (2)
Solving for
in equation (1):
equation (3)
Solving for
in equation (2):
equation (4)
Replacing equation (4) in equation (3):
Solving for
:
or
We can conclude that the speed of the boat traveling in the lake was either
6 km/hour or
5 km/hour.
Answer:
11250
Step-by-step explanation:
Answer:
Step-by-step explanation:
TYSM
