Question

5 1/4(12-t)-3 3/4(-t-24) при t=-0,4

Answer 1

5 1/4(12-t)-3 3/4(-t-24)= 63-5 1/4t+ 3 3/4t+90=153- 1 1/2t

если t= -0,4, то 153-1 1/2×(-0,4)=153+3/5=153 3/5

Ответ: 153 3/5

Answer 2

To evaluate the expression 5 1/4(12-t) - 3 3/4(-t-24) when t = -0.4, follow these steps:

Step 1: Replace t with -0.4 in the expression. Step 2: Perform the arithmetic operations.

Let's proceed with the calculation:

Step 1: Replace t with -0.4 5 1/4(12 - (-0.4)) - 3 3/4(-(-0.4) - 24)

Step 2: Perform the arithmetic operations 5 1/4(12.4) - 3 3/4(0.4 - 24)

Step 3: Simplify further 5 1/4 * 12.4 = 65/4 * 12.4 ≈ 81.25 3 3/4 * (0.4 - 24) = 15/4 * (-23.6) ≈ -88.5

Now, put the simplified values back into the expression:

81.25 - (-88.5) = 81.25 + 88.5 ≈ 169.75

So, the value of the expression when t = -0.4 is approximately 169.75.