Question

СРОЧНО ПОМОГИТЕ Доманная состоит из трёх звеньев.Длина первого 4,7 что на 1,9 меньше длины второго звена и на 0,7 см больше длины второго звена Чему равна длина ломанной?

Answer 1

Ответ:

15,3

Пошаговое объяснение:

1 - 4,7

2 - 4,7 + 1,9 = 6,6

3 - 4,7 - 0,7 = 4

4,7 + 6,6 + 4 = 15,3

Answer 2

Length of the Broken Line

To find the length of the broken line, we need to determine the lengths of the three segments. Let's denote the lengths of the first, second, and third segments as x, y, and z, respectively.

According to the given information: - The length of the first segment is 4.7 cm, which is 1.9 cm less than the length of the second segment. - The length of the first segment is also 0.7 cm more than the length of the third segment.

Based on these conditions, we can set up the following equations:

1. x = 4.7 cm 2. y = x + 1.9 cm 3. z = x - 0.7 cm

To find the length of the broken line, we need to calculate the sum of these three segments: x + y + z.

Let's substitute the values of x, y, and z into the equation and calculate the length of the broken line.

Calculation

Substituting the value of x into equations 2 and 3, we get:

2. y = 4.7 cm + 1.9 cm = 6.6 cm 3. z = 4.7 cm - 0.7 cm = 4.0 cm

Now, we can calculate the length of the broken line by summing up the lengths of the three segments:

Length of the broken line = x + y + z = 4.7 cm + 6.6 cm + 4.0 cm = 15.3 cm

Therefore, the length of the broken line is 15.3 cm.

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