Question

1) 10×2:0,4-2,6×(-3) ​

Answer 1

вот надеюсь помог(ла) ))

Объяснение:

правильно?

Answer 2

To simplify the expression 10×2:0,4-2,6×(-3), you should follow the order of operations (PEMDAS/BODMAS), which stands for Parentheses/Brackets, Exponents/Orders (i.e., powers and square roots, etc.), Multiplication and Division (left-to-right), and Addition and Subtraction (left-to-right).

Here's the step-by-step simplification:

1. First, deal with the multiplication and division from left to right: 10 × 2 = 20 0.4 ÷ 2.6 ≈ 0.1538 (rounded to 4 decimal places)

So, the expression becomes: 20 - 0.1538 × (-3)

2. Now, perform the remaining multiplication: -0.1538 × (-3) = 0.4614 (rounded to 4 decimal places)

3. Finally, subtract the result from step 2 from 20: 20 - 0.4614 ≈ 19.5386 (rounded to 4 decimal places)

So, the final simplified result is approximately 19.5386.