alexusatus alexusatus

02-05-2018
Mathematics

contestada

A boat traveling upstream goes 84 kilometers in 7 hours. If the return trip takes only 3 hours, what is the speed (in kilometers per hour) of the boat still in water?

Respuesta :

Аноним Аноним

02-05-2018

Speed = Distance ÷ time

Speed upstream = 84 ÷ 7 = 12 km/h

Speed downstream = 84 ÷ 3 = 28 km/h

Speed in still water = 1/2(28 + 12) = 20 km/h

Answer: 20 km/h

Answer Link

Otras preguntas

HELP PLZZZZ all u need to know is in picture

The figure shows two angles. What is the value of x?

Help please I’m being timed!

Cargo ship can carry 21,600 tons Cars weigh 3.6 tons each Trucks weigh 7.5 tons each y = number of cars x= number of trucks Your equation was 3.6y + 7.5x = 21 6

Create 'wh questions' which relate to the given statements. a. I like soft chocolates best. Which ________________? b. Jack came on his bike. How_______________

How does your community remember or honor civil rights leaders?

what part of 1.25 cm is 0.5 cm?

A _______ area in the cell cycle is a critical control point where protein signals check for mutations

y=x+3 find the inverse

1.What is the slope of this graph? 2.What is the y- intercept of this graph? 3.what is the equation of the graph?