Question

(m-5n-6r)*(-1,4)=??????

Answer 1

Пошаговое объяснение:

(m-5n-6r)×(-1,4)= -1,4m+ 7n+ 8,4r

Answer 2

Разложим выражение (m - 5 * n - 6 * k) * (-1,4) на многочлены.  

Для этого, раскроем скобки. Каждое значение перед скобкой умножаем на значения в скобках, и запишем их сумму.  

Получаем:  

(m - 5 * n - 6 * k) * (-1,4) = -1,4 * (m - 5 * n - 6 * k) = -1.4 * m - 1.4 * (-5 * n) - 1.4 * (-6 * k) = -1.4 * m + 1.4 * 5 * n + 1.4 * 6 * k = -1.4 * m + 7 * n + 8.4 * k = 7 * n + 8.4 * k - 1.4 * m.  

В итоге получили, (m - 5 * n - 6 * k) * (-1,4) = 7 * n + 8.4 * k - 1.4 * m.

Answer 3

To evaluate the expression (m - 5n - 6r) * (-1,4), it appears that you are trying to multiply the expression (m - 5n - 6r) by the vector (-1, 4). However, the notation you've used is unclear.

If you meant to use the standard multiplication symbol "*", the expression would be:

(m - 5n - 6r) * (-1, 4)

In this case, the multiplication of a scalar (m - 5n - 6r) by a vector (-1, 4) is not defined. Scalar multiplication with a vector involves multiplying each component of the vector by the scalar. Since (-1, 4) is a vector and (m - 5n - 6r) is a scalar, the multiplication operation is not valid.

If you meant to represent a dot product or an inner product between the two vectors, the correct notation would be:

(m - 5n - 6r) · (-1, 4)

In this case, the dot product can be calculated as follows:

(m - 5n - 6r) · (-1, 4) = (-1)(m) + (-1)(5n) + (-1)(6r) + (4)(m) + (4)(5n) + (4)(6r) = -m - 5n - 6r + 4m + 20n + 24r = 3m + 15n + 18r

Therefore, (m - 5n - 6r) · (-1, 4) simplifies to 3m + 15n + 18r.