Question

1,2а + 2,7а, якщо а = 4,2

Answer 1

Пошаговое объяснение:

$1.2 \times 4.2 + 2.7 \times 4.2 = 5.04 + 11.34 = 16.38$

Answer 2

To calculate the expression 1.2а + 2.7а when а = 4.2, you simply need to substitute the value of а into the expression and perform the arithmetic operation.

Let's do the calculations step by step:

1.2а = 1.2 * 4.2 = 5.04 2.7а = 2.7 * 4.2 = 11.34

Now, add the two results together:

1.2а + 2.7а = 5.04 + 11.34 = 16.38

So, when а = 4.2, the expression 1.2а + 2.7а evaluates to 16.38.