Question

3) 12,5a²+3,6b, при α=1,2, b=0,8;​

Answer 1

Пошаговое объяснение:

12,5*1.2^2+3.6*0.8=

25/2*(6/5)^2+2.88=

25/2*36/25+2.88=

(сокращаем и получается ) :

1/2*36+2.88=18+2.88=20.88

Ответ:20.88

Answer 2

Ответ:

20,88

Пошаговое объяснение:

12,5 * (1,2)² + 3,6 * 0,8 = 12,5 * 1,44 + 3,6 * 0,8 = 18 + 2,88 = 20,88

Answer 3

To evaluate the expression 12.5a² + 3.6b when α = 1.2 and b = 0.8, we substitute the given values into the expression:

12.5(1.2)² + 3.6(0.8)

First, we calculate 1.2 squared:

1.2 * 1.2 = 1.44

Next, we substitute the values into the expression:

12.5(1.44) + 3.6(0.8)

Now, we perform the multiplications:

12.5 * 1.44 = 18 3.6 * 0.8 = 2.88

Finally, we add the results:

18 + 2.88 = 20.88

Therefore, when α = 1.2 and b = 0.8, the expression 12.5a² + 3.6b evaluates to 20.88.