Question

15*(1/20*21+1/21*22+1/22*23+1/23*24+1/24*25+1/25*26+1/26*27+1/27*28+1/28*29+1/29*30)​

Answer 1

Ответ:

156 это если округлить

Если нет, то 156.2087121066506374.

В калькуляторе забил

Answer 2

To calculate the given expression:

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15 * (1/20*21 + 1/21*22 + 1/22*23 + 1/23*24 + 1/24*25 + 1/25*26 + 1/26*27 + 1/27*28 + 1/28*29 + 1/29*30)

We can follow these steps:

1. Calculate each of the fractions.
2. Add the results of the fractions.
3. Multiply the sum by 15.

Let's do the calculations step by step:

1. Calculate the fractions:

• 1/20 * 21 = 1.05
• 1/21 * 22 = 1.047619...
• 1/22 * 23 = 1.045454...
• 1/23 * 24 = 1.043478...
• 1/24 * 25 = 1.041667...
• 1/25 * 26 = 1.04
• 1/26 * 27 = 1.038461...
• 1/27 * 28 = 1.037037...
• 1/28 * 29 = 1.035714...
• 1/29 * 30 = 1.034483...

2. Add the results of the fractions:

Sum = 1.05 + 1.047619... + 1.045454... + 1.043478... + 1.041667... + 1.04 + 1.038461... + 1.037037... + 1.035714... + 1.034483...

3. Multiply the sum by 15:

Result = Sum * 15

Please note that the actual decimal values of the fractions are rounded here for simplicity. If you need a more precise result, you can perform the calculations with higher precision or by using a calculator capable of handling fractions.

Answer 3

To calculate the expression, let's break it down step by step:

1. Calculate each term within the parentheses:

   • 1/20 * 21 = 21/20
   • 1/21 * 22 = 22/21
   • 1/22 * 23 = 23/22
   • 1/23 * 24 = 24/23
   • 1/24 * 25 = 25/24
   • 1/25 * 26 = 26/25
   • 1/26 * 27 = 27/26
   • 1/27 * 28 = 28/27
   • 1/28 * 29 = 29/28
   • 1/29 * 30 = 30/29

2. Add up all the calculated terms: 21/20 + 22/21 + 23/22 + 24/23 + 25/24 + 26/25 + 27/26 + 28/27 + 29/28 + 30/29

3. Multiply the sum by 15: 15 * (sum of terms)

Calculating this expression gives you the final result. Keep in mind that the result might be a fraction or a decimal number, depending on the calculation.