Question

(-2,5•(-7n))•4 m,при mn =3

Answer 1

Ответ:

70 mn

70*3=210

Пошаговое объяснение:

17,5n *4m

70mn

Answer 2

To evaluate the expression (-2,5•(-7n))•4m when mn = 3, we substitute the value of mn into the expression:

(-2.5•(-7n))•4m = (-2.5•(-7•3))•4 = (-2.5•(-21))•4 = (52.5)•4 = 210.

Therefore, when mn is equal to 3, the expression (-2.5•(-7n))•4m evaluates to 210.