Question

0.6a + 8.7а - 2.3а -3.5,если а равно 0.9

Answer 1

Ответ:

2,8

Пошаговое объяснение:

7a-3,5

Подставим a=0,9

7*0,9-3,5=2,8

Answer 2

Ответ:

$2,8.$

Пошаговое объяснение:

$0,6a+8,7a-2,3a-3,5=7a-3,5=7*(0,9)-3,5=2,8$

Answer 3

To solve the given expression, we substitute the value of "а" as 0.9 and perform the calculations:

0.6a + 8.7a - 2.3a - 3.5

Replacing "а" with 0.9:

0.6(0.9) + 8.7(0.9) - 2.3(0.9) - 3.5

0.54 + 7.83 - 2.07 - 3.5

Now, let's simplify the expression:

0.54 + 7.83 - 2.07 - 3.5 = 3.8

Therefore, when "а" is equal to 0.9, the expression 0.6a + 8.7a - 2.3a - 3.5 evaluates to 3.8.