Question

735. Объясни, почему выражение не делится на 5: 1) 450 + 14; 2) 121 - 35; 3) 5.x - 96; 4) 5551 + 25y.​

Answer 1

Ответ:

Пошаговое объяснение:

1. т.к. будет в конце 4, а она не делится на 5

2. в конце 6, а она не делится на 5

3. будет 94, ...с чем - то, а 94 не / на 5

4. чему б не был равен у, он умножается на 5, уже делится, а прибавляется не кратное 5, число 5551

Answer 2

Ответ:

вот

Пошаговое объяснение:

450+14= 464

так как число не оканчивается на 5 то на 5 оно не делится

121-35=86

такое же как в первом

-91х

уже понятно

5576у

по такой же причине

Answer 3

Explanation of why the expressions do not divide by 5:

1) 450 + 14: To determine if an expression is divisible by 5, we need to check if the sum of the digits is divisible by 5. In this case, the sum of the digits in 450 is 4 + 5 + 0 = 9, and the sum of the digits in 14 is 1 + 4 = 5. Since the sum of the digits is not divisible by 5, the expression 450 + 14 is not divisible by 5.

2) 121 - 35: Similarly, we need to check if the difference between the digits is divisible by 5. The difference between 1 and 3 is -2, which is not divisible by 5. Therefore, the expression 121 - 35 is not divisible by 5.

3) 5.x - 96: In this expression, we have a variable x. Without knowing the value of x, we cannot determine if the expression is divisible by 5. It depends on the value of x. Therefore, we cannot say whether 5.x - 96 is divisible by 5 without more information.

4) 5551 + 25y: Similar to the previous expression, we have a variable y in this expression. Without knowing the value of y, we cannot determine if the expression is divisible by 5. It depends on the value of y. Therefore, we cannot say whether 5551 + 25y is divisible by 5 without more information.

In summary, the expressions 450 + 14 and 121 - 35 are not divisible by 5 based on the sum and difference of their digits. However, we cannot determine if 5.x - 96 and 5551 + 25y are divisible by 5 without knowing the values of x and y.