Question

Средне арифметическое 4-х чисел равно 52 к данной группе чисел добавили число 7 чему теперь равно средне аРифметическое ПОДАЙ ПОНЯТНЫЕ ОБЪЯСНЕНИЯ

Answer 1

Пусть у нас в группе числа: а, b, c, d, тогда
(a+b+c+d)/4=52 => a+b+c+d=52*4=208
добавим к группе 7 и найдем среднее арифметическое:
(a+b+c+d+7)/5=(208+7)/5=215/5=43
Ответ: 43

Answer 2

52×4=208 это сумма всех четырех чисел
208+7= 215 это сумма всех чисел вместе с добавленной 7
чисел теперь стало 5
значит среднее арифм пяти чисел буде
215÷5=43
кажется так

Answer 3

Calculation of the New Arithmetic Mean

To find the new arithmetic mean after adding the number 7 to a given group of numbers, we need to calculate the sum of all the numbers in the group and then divide it by the total count of numbers.

Let's assume the given group of numbers is 4, and the arithmetic mean of these numbers is 52. We can set up the equation as follows:

Sum of the original numbers + 7 (new number) = Total sum of all numbers

To find the new arithmetic mean, we divide the total sum by the count of numbers, which is 5 in this case.

Now, let's calculate the new arithmetic mean step by step:

1. Multiply the original arithmetic mean by the count of numbers: - 52 (original arithmetic mean) * 4 (count of numbers) = 208

2. Add the new number, 7, to the total sum: - 208 + 7 = 215

3. Divide the total sum by the count of numbers (including the new number): - 215 / 5 = 43

Therefore, the new arithmetic mean after adding the number 7 to the given group of numbers is 43.

Please note that the sources provided do not contain specific information related to this calculation. The explanation provided above is based on the general concept of calculating the arithmetic mean.