Question

Задача: Первая палочка на 2 см длиннее второй палочки.Третья палочка на 2 см короче первой.Сумма длины палочек равна 11 смПомогите срочно решить,пожалуйста​

Answer 1

Пусть 2 палочка -x , тогда 1 палочка=x+2, 3 палочка=(x+2) -2, по условию задачи составим математическую модель:
x+2+x+x+2-2=11
3x+2=11
3x=9
X=3-вторая палочка
2)3+2=5(1 палочка)
3) 3+2-2=3(3 палочка)

Answer 2

Problem Analysis

We are given three sticks, and we need to find their lengths. The first stick is 2 cm longer than the second stick, and the third stick is 2 cm shorter than the first stick. The sum of the lengths of all three sticks is 11 cm.

Solution

Let's assume the length of the second stick is x cm. According to the problem, the first stick is 2 cm longer than the second stick, so its length is (x + 2) cm. Similarly, the third stick is 2 cm shorter than the first stick, so its length is (x + 2 - 2) cm, which simplifies to (x) cm.

According to the problem, the sum of the lengths of all three sticks is 11 cm. We can write this as an equation:

x + (x + 2) + x = 11

Simplifying the equation:

3x + 2 = 11 3x = 9 x = 3

Therefore, the length of the second stick is 3 cm. Using this information, we can find the lengths of the other two sticks:

- The length of the first stick is (x + 2) cm, which is 3 + 2 = 5 cm. - The length of the third stick is (x) cm, which is 3 cm.

So, the lengths of the three sticks are: - First stick: 5 cm - Second stick: 3 cm - Third stick: 3 cm

Answer

The lengths of the three sticks are as follows: - First stick: 5 cm - Second stick: 3 cm - Third stick: 3 cm