Question

правила записи арифметических выражений. урок 1 установи соответствие между арифметическими функциями и результатами их выполнения количество соединений 4 round(3.1423456,2) abs(-15) divmod(45,6) pow(-3,3) 7,3 3.14 -27 15 помогите пожалуйста ​

Answer 1

Ответ:

round(3.1423456,2) = 3.14

abs(-15) = 15

divmod(45,6) = 7,3

pow(-3,3) = -27

Answer 2

Rules for Writing Arithmetic Expressions

When writing arithmetic expressions, there are certain rules that need to be followed to ensure clarity and accuracy. Here are some key rules for writing arithmetic expressions:

1. Use parentheses: Parentheses are used to indicate the order of operations in an expression. Operations within parentheses are performed first. For example, in the expression `(2 + 3) * 4`, the addition inside the parentheses is performed first, resulting in `5 * 4 = 20`.

2. Follow the order of operations: The order of operations, also known as PEMDAS (Parentheses, Exponents, Multiplication and Division, Addition and Subtraction), dictates the sequence in which operations should be performed. For example, in the expression `2 + 3 * 4`, the multiplication is performed first, resulting in `2 + 12 = 14`.

3. Use appropriate operators: Different operators are used for different arithmetic operations. The most common operators are:

- Addition: `+` - Subtraction: `-` - Multiplication: `*` - Division: `/` - Exponentiation: `**` or `^` - Modulo (remainder): `%`

4. Be mindful of operator precedence: Operators have different levels of precedence, meaning some operations are performed before others. For example, multiplication and division are performed before addition and subtraction. If there are multiple operations in an expression, it is important to consider the precedence of the operators and use parentheses when necessary to clarify the order of operations.

Now, let's move on to the second part of your question.

Correspondence between Arithmetic Functions and Results

You mentioned four arithmetic functions and their corresponding results. Let's go through each one:

1. `round(3.1423456, 2)`: The `round()` function is used to round a number to a specified number of decimal places. In this case, `3.1423456` is rounded to `2` decimal places, resulting in `3.14`.

2. `abs(-15)`: The `abs()` function is used to find the absolute value of a number. The absolute value of `-15` is `15`.

3. `divmod(45, 6)`: The `divmod()` function is used to perform integer division and return both the quotient and the remainder. In this case, `45` divided by `6` results in a quotient of `7` and a remainder of `3`. Therefore, the result of `divmod(45, 6)` is `(7, 3)`.

4. `pow(-3, 3)`: The `pow()` function is used to raise a number to a specified power. In this case, `-3` raised to the power of `3` results in `-27`.

I hope this helps! Let me know if you have any further questions.