If the boat travels 60 km in 8 hours, the rate it travels upstream is then 60/8 km/hr, or 15/2 km/hr. if the river is traveling against it at 4 km/hr, it subtracts from the boats max speed by 4 km/hr, and 15/2 + 4 or 23/2 km/hr is then the boats speed in still water.
Answer:
one
Step-by-step explanation:
3(x - 2) = 22 - x
3x - 6 = 22 - x
3x + x = 22 + 6
4x = 28
4x/4 = 28/4
x = 7
Answer:
48
Step-by-step explanation:
The 156° angle will help you in this problem.
On the opposite side, you have to find the number that equals to 180°
So that'll be: <em>180° - 156° </em>
This will equal 24°
Now you have 2 angles inside the triangle, 108° and 24°
Add those 2 numbers: <em>108° + 24°</em>
This will equal 132°
All triangles must equal to 180°
So you subtract: <em>180° - 132°</em>
Which will equal 48°.
Answer:
that looks hard
Step-by-step explanation:
