Question

помогите пж срочно:Скорость лодки в 2 раза боьше скорости течения реки,Найдти скорость лодки ,если её скорости по течению реки равна 9 км/ч. эту задачу надо решить спомош уравнения​

Answer 1

Ответ:

6

Пошаговое объяснение:

пусть V1- скорость лодки

V2- скорость течения

V1=2x

V2=x

V1+V2=9

3x=9

x=3 км/ ч ( скорость течения)

Answer 2

Problem Statement

You are given the following information: - The speed of a boat is twice the speed of the river current. - The speed of the boat relative to the river current is 9 km/h.

You need to find the speed of the boat.

Solution

Let's assume the speed of the river current is x km/h. According to the given information, the speed of the boat is twice the speed of the river current, so the speed of the boat is 2x km/h.

The speed of the boat relative to the river current is given as 9 km/h. This means that the boat's speed minus the river current's speed is equal to 9 km/h. Mathematically, we can represent this as:

2x - x = 9

Simplifying the equation, we get:

x = 9

Therefore, the speed of the river current is 9 km/h.

To find the speed of the boat, we substitute the value of x back into the equation:

2x = 2 * 9 = 18

Therefore, the speed of the boat is 18 km/h.

Answer

The speed of the boat is 18 km/h.