Question

5) -1,4а + 31b - 2,6a + 4b, при а = 1,4, b = -0,2.​

Answer 1

Ответ:

-12,6

Пошаговое объяснение:

5) -1,4а + 31b - 2,6a + 4b = -4a + 35b

при а = 1,4, b = -0,2.​

-4a + 35b = -4 * 1,4 + 35*(-0,2) = -5,6 - 7 = -12,6

Answer 2

To evaluate the expression -1,4a + 31b - 2,6a + 4b when a = 1.4 and b = -0.2, we substitute the given values into the expression:

-1.4a + 31b - 2.6a + 4b

Replacing a with 1.4 and b with -0.2:

-1.4(1.4) + 31(-0.2) - 2.6(1.4) + 4(-0.2)

Simplifying each term:

-1.96 - 6.2 - 3.64 - 0.8

Adding the terms:

-1.96 + (-6.2) + (-3.64) + (-0.8) = -12.6

Therefore, when a = 1.4 and b = -0.2, the expression -1.4a + 31b - 2.6a + 4b equals -12.6.