Question

5,6-0,6(5х+2) при =-2,1

Answer 1

Ответ:

10.7

Пошаговое объяснение:

5,6-0,6(5х+2)=5.6-3x-1.2=4.4-3x=4.4-3×(-2.1)=4.4+6.3=10.7

Answer 2

Ответ:

$10.7$

Пошаговое объяснение:

$5.6-0.6\cdot(5\cdot(-2.1)+2)=5.6-0.6\cdot(-10.5+2)=5.6-0.6\cdot(-8.5)=5.6-(-\frac{3}{5}\cdot\frac{17}{2})= 5.6-(-\frac{3\cdot17}{5\cdot2})=5.6-(-\frac{51}{10})=5.6+5.1=10.7$

Answer 3

To evaluate the expression 5.6 - 0.6(5x + 2) when x = -2.1, you can substitute the value of x into the expression and perform the calculations step by step.

1. Replace x with -2.1: 5.6 - 0.6(5*(-2.1) + 2)

2. Calculate the value inside the parentheses: 5.6 - 0.6(-10.5 + 2)

3. Continue simplifying: 5.6 - 0.6(-8.5)

4. Now, multiply -0.6 by -8.5: 5.6 + 5.1

5. Finally, add 5.6 and 5.1: 10.7

So, when x = -2.1, the expression 5.6 - 0.6(5x + 2) equals 10.7.