Question

2 (а + 1) - 8 (3 - а) +5 При а = 0,3

Answer 1

Раскрываем скобки.

2*а + 2 - 24 + 8а + 5 = 10а - 17 = 10*0,3 - 17 = - 14 - ОТВЕТ

Answer 2

To evaluate the expression 2(а + 1) - 8(3 - а) + 5 when а = 0.3, simply substitute the value of а into the expression and perform the calculations step by step.

Let's do it:

Given expression: 2(а + 1) - 8(3 - а) + 5

Now, substitute а = 0.3:

= 2(0.3 + 1) - 8(3 - 0.3) + 5

= 2(1.3) - 8(2.7) + 5

Now, perform the multiplications:

= 2.6 - 21.6 + 5

Now, perform the additions and subtractions:

= -14.0

So, when а = 0.3, the value of the expression 2(а + 1) - 8(3 - а) + 5 is -14.0.