Answer:
Answer: The speed of the boat in still water or 'b' = 10 km/h. The speed of the current or the river = 4 km/h. Therefore the speed of the boat when going upstream = b – r = 10 – 4 = 6 km/hr.
Answer:
82⁰
Step-by-step explanation:
you subtract angle A from 180 to give you 37 and you add that to 61 to give you 98 and you subtract that from 180 to give you 82⁰
The length of wire to be purchased will be found as follows:
c²=a²+b²
c²=18²+24²
c²=900
c=√900
c=30 ft
Thus the length of the wire will be:
30+4+4
=38 ft
Answer:

Step-by-step explanation:
According to the information of the problem the plane is traveling at a constant velocity therefore the function that models that gives the distance of the plane from city B at time t hours would be linear. Something like this.

The velocity is the slope of the line and if you take B as your reference you would be going backwards therefore we would say that
. And as I mentioned before if you take B as your reference your starting point would be 2070 miles away, therefore the function would be


Here, in the given figure. Angle y° forms vertical opposite angle pair with Angle 163°, therefore they have equal values.
that means ~
