Question

Вычислить 9 × 3⁻² + 4 × (2 / 3)⁻²=

Answer 1

Ответ прикреплен во вложении

Answer 2

Решение на фото...........

Answer 3

To calculate the expression 9 × 3⁻² + 4 × (2 / 3)⁻², follow the order of operations (PEMDAS/BODMAS):

1. First, perform any calculations inside parentheses: 2 / 3 = 0.6666666667 (rounded to 10 decimal places) (2 / 3)⁻² = 1 / (2 / 3)² = 1 / 0.4444444444 (rounded to 10 decimal places) = 2.25

2. Next, calculate the exponentiation: 3⁻² = 1 / 3² = 1 / 9 = 0.1111111111 (rounded to 10 decimal places)

3. Now, perform the multiplications: 9 × 0.1111111111 = 1 (rounded to 10 decimal places) 4 × 2.25 = 9 (rounded to 10 decimal places)

4. Finally, add the results of the multiplications: 1 + 9 = 10

Therefore, 9 × 3⁻² + 4 × (2 / 3)⁻² = 10.