Question

10) -3,5-¹+ (-2.5)-²​

Answer 1

Ответ:

Смотри решение на фото

Answer 2

It looks like you've provided a mathematical expression that involves negative exponents. Let's break down the expression step by step:

1. -3,5⁻¹: This is equal to -3 raised to the power of -1, which is the same as taking the reciprocal of -3. So, -3⁻¹ = -1/3.

2. -2.5⁻²: This is equal to -2.5 raised to the power of -2, which is again the reciprocal of -2.5 squared. So, -2.5⁻² = -1/(2.5²) = -1/6.25 = -0.16.

Adding the results of these two calculations:

-1/3 + (-0.16) = -0.333... + (-0.16) ≈ -0.493...

So, the approximate value of the expression -3,5⁻¹ + (-2.5)⁻² is around -0.493.