Question

Два автомобиля,допустим у них гонки, путь 800 км скорость первого на 36 больше скорости 2,первый приехал на 5 часов раньше Найти скорость первого

Answer 1

Пусть скорость второго автомобиля х км\час, тогда скорость первого х+36 км\час.
Составим уравнение:
800\х - 800\(х+36) = 5
800х+28800-800х-5х²-180х=0
х²+36х-5760=0
х=60 - это скорость второго автомобиля.
60+36=96 (км\час) скорость первого.
Ответ: 96 км\час.

Answer 2

Calculating the Speed of the First Car

To find the speed of the first car, we can use the formula: speed = distance / time

Given: - Distance = 800 km - Let's assume the speed of the second car is "x" km/h - Speed of the first car = (x + 36) km/h - Time taken by the first car = Time taken by the second car - 5 hours

Using the formula, we can set up the equation to solve for the speed of the first car.

Solution

Let's denote: - Speed of the second car as x km/h - Time taken by the second car as t hours

The time taken by the first car would be t - 5 hours.

Using the formula speed = distance / time, we can set up the equation:

800 / (x + 36) = 800 / x - 5

Solving this equation will give us the speed of the first car.

Calculating the Speed of the First Car

The speed of the first car is 108 km/h.

This is calculated using the equation 800 / (x + 36) = 800 / x - 5