Question

Помогите пожалуйста:В парке всего 639 деревьев.Березы составляют 7/9всех деревьев,остальные клены.Сколько в парке берез и сколько кленов?Длина скорпионов достигает 18см, что составляет 1,6-дляну его предков-рако-скорпионов. Найдите длину рако-скорпиона.

Answer 1

Берез - 497
клены - 142
рако-скорпион- 11.25см

Answer 2

Problem 1: Number of Birch and Maple Trees in the Park

To find the number of birch and maple trees in the park, we need to use the given information that birch trees make up 7/9 of all the trees in the park.

Let's assume the total number of trees in the park is represented by the variable "T". According to the given information, the number of birch trees is 7/9 of T, and the number of maple trees is the remaining fraction, which is 2/9 of T.

To find the number of birch trees, we can multiply the total number of trees by the fraction representing the proportion of birch trees: 7/9 * T. Similarly, the number of maple trees can be found by multiplying the total number of trees by the fraction representing the proportion of maple trees: 2/9 * T.

Let's calculate the number of birch and maple trees using this information:

Number of birch trees = (7/9) * 639 Number of maple trees = (2/9) * 639

Now, let's calculate the values:

Number of birch trees = (7/9) * 639 = 499 Number of maple trees = (2/9) * 639 = 140

Therefore, there are 499 birch trees and 140 maple trees in the park.

Problem 2: Length of a Scorpion

To find the length of a scorpion, we are given that the length of a scorpion is 1.6 times the length of its ancestors, which were crab-scorpions. The length of a scorpion is given as 18 cm.

Let's assume the length of the crab-scorpion is represented by the variable "C". According to the given information, the length of the scorpion is 1.6 times the length of the crab-scorpion.

To find the length of the crab-scorpion, we can divide the length of the scorpion by the scaling factor of 1.6: 18 cm / 1.6.

Let's calculate the length of the crab-scorpion using this information:

Length of the crab-scorpion = 18 cm / 1.6

Now, let's calculate the value:

Length of the crab-scorpion = 18 cm / 1.6 ≈ 11.25 cm

Therefore, the length of the crab-scorpion is approximately 11.25 cm.