Answer:
D
Step-by-step explanation:
Where f(0) is or x=0, y= 4
5km = 5000 meters
450m+800m= 1250m
5000m-1250m= 3,750m
3 3/4 km
Answer:
C (Sorry if its incorrect)
Step-by-step explanation:
Answer:
18.87 km/hr
Step-by-step explanation:
First boat is heading North with a speed of 10 km/hr.
Second boat is heading West with a speed of 16 km/hr.
Time for which they move = 2.5 hours
To find:
The speed at which the distance is increasing between the two boats.
Solution:
Let the situation be represented by the attached diagram.
Their initial position is represented by point O from where they move towards point A and point B respectively.



We can use Pythagorean Theorem to find the distance AB.
AB is the hypotenuse of the right angled
.
According to Pythagorean theorem:

The speed at which distance is increasing between the two boats is given as:
