Question

Помогите пожалуйста, даю 30 баллов1) I-2,1I:I-3,7I2) I8/9I*I-27/32I

Answer 1

Ответ:

1) 2,1 : /-3.7/= 2.1 : 3.7=21/10 : 37/10=21/10 * 1/37=21/37 или 0.567

2) 8/9 * 27/32= 3/4

Пошаговое объяснение:

Answer 2

1) To simplify the expression I-2,1I:I-3,7I, we can break it down into two parts: I-2,1I and I-3,7I.

First, let's simplify I-2,1I. The absolute value of -2.1 is 2.1, so I-2,1I is equal to 2.1.

Next, let's simplify I-3,7I. The absolute value of -3.7 is 3.7, so I-3,7I is equal to 3.7.

Now, we can substitute these values back into the original expression: 2.1:3.7.

To divide two numbers, we can multiply the first number by the reciprocal of the second number. So, 2.1:3.7 is equivalent to 2.1 * (1/3.7).

Calculating this, we get: 2.1 * (1/3.7) = 0.5675675675675675.

Therefore, the value of the expression I-2,1I:I-3,7I is approximately 0.5676.

2) To simplify the expression I8/9I*I-27/32I, we can follow a similar process.

First, let's simplify I8/9I. The absolute value of 8/9 is 8/9, so I8/9I is equal to 8/9.

Next, let's simplify I-27/32I. The absolute value of -27/32 is 27/32, so I-27/32I is equal to 27/32.

Now, we can substitute these values back into the original expression: 8/9 * 27/32.

To multiply two fractions, we multiply the numerators together and the denominators together. So, 8/9 * 27/32 is equal to (8 * 27) / (9 * 32).

Calculating this, we get: (216) / (288) = 0.75.

Therefore, the value of the expression I8/9I*I-27/32I is 0.75.

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