Question

626. Вычислите: 1) (-2,5) - (-2,7) :(-0,4);3) 3,75 :(-11)-(-0,8);2) (-16) - 7,3 :(-1,5);4) (-5,2) (-10) :(-2,5).помогите пожалуйста срочно даю 25 баллов только нужно расписать заранее спасибо​

Answer 1

Ответ:

1)-9,25

2)-11,1(3) это тоже период

3)0,45(90) это период

4)-20,8 если там звёздочка тоесть умножить -- после -5,2

а если там минус -9,2

Answer 2

Calculation of Expressions:

1) (-2.5) + (-2.7) / (-0.4): To calculate this expression, we need to perform the division first and then add the result to -2.5 and -2.7. Let's calculate it step by step:

- Division: (-2.7) / (-0.4) = 6.75 - Addition: (-2.5) + 6.75 = 4.25

Therefore, the value of the expression (-2.5) + (-2.7) / (-0.4) is 4.25.

2) 3.75 / (-11) - (-0.8): To calculate this expression, we need to subtract -0.8 from the division of 3.75 by -11. Let's calculate it step by step:

- Division: 3.75 / (-11) = -0.3409090909090909 - Subtraction: -0.3409090909090909 - (-0.8) = 0.4590909090909091

Therefore, the value of the expression 3.75 / (-11) - (-0.8) is 0.4590909090909091.

3) (-16) + 7.3 / (-1.5): To calculate this expression, we need to perform the division first and then add the result to -16 and 7.3. Let's calculate it step by step:

- Division: 7.3 / (-1.5) = -4.866666666666666 - Addition: (-16) + (-4.866666666666666) = -20.866666666666666

Therefore, the value of the expression (-16) + 7.3 / (-1.5) is -20.866666666666666.

4) (-5.2) + (-10) / (-2.5): To calculate this expression, we need to perform the division first and then add the result to -5.2 and -10. Let's calculate it step by step:

- Division: (-10) / (-2.5) = 4 - Addition: (-5.2) + 4 = -1.2

Therefore, the value of the expression (-5.2) + (-10) / (-2.5) is -1.2.

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