Question

-0,2 * l0,5x- 3,9l=-16

Answer 1

l0,5x- 3,9l=-16:0,2=80

Два случая 0,5x- 3,9=80  или х-7,8=160

и 0,5x- 3,9=-80   или х-7,8=-160

Два решения

х1=167,8

х2=-152,2

Answer 2

Пошаговое объяснение:

-0,2×|0,5х-3,9|= - 16

|0,5х-3,9|= - 16:(-0,2)

|0,5х-3,9|=80

0,5х-3,9=80 0,5х-3,9= -80

0,5х=80+3,9 0,5х= - 80+3,9

0,5х=83,9 0,5х= - 76,1

Х=167,8 х= - 152,2

Ответ : Х1= - 152,2 ; х2=167,8

Answer 3

To solve the equation:

-0.2 * √(0.5x) - 3.9|x| = -16

We need to isolate the variable x. Let's break it down step by step:

Step 1: Simplify the equation by removing absolute value signs. -0.2 * √(0.5x) - 3.9x = -16

Step 2: Move the constant term to the right side. -0.2 * √(0.5x) = -16 + 3.9x

Step 3: Square both sides of the equation to eliminate the square root. (-0.2 * √(0.5x))^2 = (-16 + 3.9x)^2

Step 4: Simplify both sides of the equation. 0.04 * 0.5x = 256 - 124.8x + 15.21x^2

Step 5: Distribute and simplify further. 0.02x = 256 - 124.8x + 15.21x^2

Step 6: Move all terms to one side to form a quadratic equation. 15.21x^2 - 124.8x + 0.02x - 256 = 0

Step 7: Combine like terms. 15.21x^2 - 124.78x - 256 = 0

At this point, the equation becomes a quadratic equation. You can use the quadratic formula or factoring methods to solve for x. If you prefer, you can provide additional context or information to narrow down the scope and find a more specific solution.