Question

Решите задачу срочно даю 25 балов!!! В Красной книге РСО-Алания насчитывается 46 видов насекомых,3 вида рыб,3 вида земноводных,9 видов пресмыкающихся,51 вид птиц и несколько видов млекопитающих .Сколько видов млекопитающих занесено в Красную книгу РСО-Алания,если всего в нем 167 видов животных?реши задачу составив уравнение. срочно пожалуйста

Answer 1

58 млекопитающих.....

Answer 2

46±3+3+9+51+x=167
x=167-112
x=55

Answer 3

Problem Analysis

To solve this problem, we need to determine the number of mammal species listed in the Red Book of the Republic of North Ossetia-Alania (RSO-Alania) given the total number of animal species listed in the book.

Solution

Let's denote the number of mammal species in the Red Book of RSO-Alania as x. We are given the following information: - Number of insect species: 46 - Number of fish species: 3 - Number of amphibian species: 3 - Number of reptile species: 9 - Number of bird species: 51 - Total number of animal species: 167

To find the number of mammal species, we need to subtract the sum of the species in the other categories from the total number of animal species and set it equal to x:

x = Total number of animal species - (Number of insect species + Number of fish species + Number of amphibian species + Number of reptile species + Number of bird species)

Let's substitute the given values into the equation and solve for x:

x = 167 - (46 + 3 + 3 + 9 + 51)

x = 167 - 112

x = 55

Therefore, there are 55 mammal species listed in the Red Book of RSO-Alania.

Answer

There are 55 mammal species listed in the Red Book of the Republic of North Ossetia-Alania (RSO-Alania) out of a total of 167 animal species