Question

При каком значении переменной т значение выражения 2,5х – 4 в 4 раза больше, чем значение выражения 1 +0,5х?​

Answer 1

Ответ:

x=16

Пошаговое объяснение:

При каком значении переменной т значение выражения 2,5х – 4 в 4 раза больше, чем значение выражения 1 +0,5х?​

(2,5х – 4 )=4 (1 +0,5х),⇔2.5x-4=4+2x,⇔0.5x=4+4,⇔x=16.

проверка

(2,5*16– 4 )=4 (1 +0,5*16),

40-4 =36,  4*(1+8)=36 - верно

Answer 2

Calculating the Value of Expression

To find the value of the expression 2.5x - 4 when t equals the value of the expression 1 + 0.5x, we can use the given equation and solve for x.

Let's denote the value of the expression 1 + 0.5x as t. Then, we have the equation: 1 + 0.5x = t

Now, we can use the value of t to find the value of the expression 2.5x - 4.

Solving for x

To solve for x, we can rearrange the equation 1 + 0.5x = t to solve for x: 0.5x = t - 1 x = 2(t - 1)

Now that we have the value of x in terms of t, we can substitute this value into the expression 2.5x - 4 to find the value of the expression when t equals the value of 1 + 0.5x.

Calculating the Value of 2.5x - 4

Substituting the value of x into the expression 2.5x - 4, we get: 2.5(2(t - 1)) - 4 = 5t - 10

So, when t equals the value of the expression 1 + 0.5x, the value of the expression 2.5x - 4 is 5t - 10.

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