Question

A-8,5a+6,2*(3+a) если a=-3.8

Answer 1

Ответ:

23,54

Пошаговое объяснение:

a-8,5a+6,2*(3+a) =-7,5а +18,6+6,2а = -1,3а+18,6

a=-3.8     -1,3*(-3,8)+18,6 =4,94+18,6=23,54

Answer 2

To evaluate the expression A = 8.5a + 6.2 * (3 + a) with the given value a = -3.8, we can substitute the value of a into the expression and perform the calculations.

A = 8.5(-3.8) + 6.2 * (3 + (-3.8))

Now, let's simplify the expression:

A = -32.3 + 6.2 * (-0.8)

Next, we'll multiply 6.2 by -0.8:

A = -32.3 - 4.96

Finally, we'll add -4.96 to -32.3:

A = -37.26

Therefore, when a is equal to -3.8, the expression A = 8.5a + 6.2 * (3 + a) evaluates to -37.26.