Question

0.7x+0.3(x-4) якщо x=-0.7

Answer 1

0,7x+0,3x-1,2= x-1,2= -0,7-1,2= - 1,9

Answer 2

To evaluate the expression 0.7x + 0.3(x - 4) when x = -0.7, you simply substitute -0.7 in place of x and then perform the calculations. Let's do that step-by-step:

1. Replace x with -0.7 in the expression: 0.7(-0.7) + 0.3(-0.7 - 4)

2. Perform the calculations inside the parentheses: -0.49 + 0.3(-4.7)

3. Multiply 0.3 by -4.7: -0.49 - 1.41

4. Add the two terms: -1.90

So, when x = -0.7, the expression 0.7x + 0.3(x - 4) evaluates to -1.90.