Question

Помогите решить задачу с одного цветка одновременно вылетели в противоположные стороны две стрекозы. Через 0.08 ч между ними было 4.4 км. скорость полета одной стрекозы 28.8 км/ч. Найдите скорость полета другой стрекозы

Answer 1

28.8*0.08=2.304(км) 1 стрекоза
4.4-2.304=2.096(км) 2 стрекоза
2.096:0.08=26.2(км/ч) V 2 стрекозы

Answer 2

Problem Analysis

We are given that two dragonflies flew in opposite directions from a flower at the same time. The distance between them after 0.08 hours is 4.4 km. We also know that the speed of one dragonfly is 28.8 km/h. We need to find the speed of the other dragonfly.

Solution

Let's assume the speed of the other dragonfly is x km/h.

We can use the formula: distance = speed × time.

For the first dragonfly: - Speed = 28.8 km/h - Time = 0.08 hours - Distance = 4.4 km

For the second dragonfly: - Speed = x km/h - Time = 0.08 hours - Distance = 4.4 km (since they both flew in opposite directions)

Using the formula, we can set up the following equation for the first dragonfly: 28.8 × 0.08 = 4.4

Simplifying the equation, we get: 2.304 = 4.4

Now, let's set up the equation for the second dragonfly: x × 0.08 = 4.4

To find the value of x, we can rearrange the equation: x = 4.4 / 0.08

Calculating the value of x, we get: x = 55

Therefore, the speed of the other dragonfly is 55 km/h.

Answer

The speed of the other dragonfly is 55 km/h.