Question

-9(0,Зх - 8) + 4(1,8х - 2), якщо х = - 0,2

Answer 1

Ответ:

63,1

Пошаговое объяснение:

- 2,7 х + 72 + 7,2 х - 8= 4,5 х + 64

х= - 0,2

4,5 • (-0,2) + 64= - 0,9 +64 = 63,1

Answer 2

To evaluate the expression "-9(0,3x - 8) + 4(1,8x - 2)" with x = -0,2, we need to substitute the value of x into the expression and simplify.

Let's start by substituting x = -0.2 into the expression:

-9(0.3(-0.2) - 8) + 4(1.8(-0.2) - 2)

Simplifying further:

-9(-0.06 - 8) + 4(-0.36 - 2)

Next:

-9(-0.06 - 8) + 4(-0.36 - 2) = -9(-8.06) + 4(-2.36)

Multiplying:

-9(-8.06) + 4(-2.36) = 72.54 + (-9.44)

Adding:

72.54 + (-9.44) = 63.1

Therefore, when x = -0.2, the expression -9(0.3x - 8) + 4(1.8x - 2) evaluates to 63.1.