B
Step-by-step explanation:
it is the only one that has angles that are right next to eachother!
Answer:
100
Step-by-step explanation:
Make 275 t0 200 and 180 to 100 and 120 to 100
200+100+100=300
now turn 75 to 70 and 80 will stay 80 and 20 will stay 20
70+80+20=170
now add the 5 to 170= 175
now add 300 to 175 to get 475 which is ya answer
The speed of motorboat is 36 kmph and speed of current is 4 kmph.
Step-by-step explanation:
Distance covered in 4 hours = 160 km
Time took on return trip = 5 hours
Let,
x represent the speed of boat.
y represent the speed of current.
Combined speed of boat and current when in same direction = x+y
Speed of boat and current when travelling against = x-y
Distance = Speed * Time
Speed = 
x+y = 
x+y = 40 Eqn 1
x-y = 
x-y = 32 Eqn 2
Adding Eqn 1 and Eqn 2

Dividing both sides by 2

Putting x=36 in Eqn 1

The speed of motorboat is 36 kmph and speed of current is 4 kmph.
Keywords: linear equation, addition
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