Question

1.обчислити: 7* 3/13 = ?? 2.знайти значення виразу: 1619 * 2/5 2. 3.Обчислити: 5* 2/7 * 3/5 ​

Answer 1

Во 2 что-то не то, там не сможет сократиться дробь

Answer 2

1. To calculate the expression 7 * 3 / 13, we follow the order of operations, which is parentheses, exponents, multiplication and division (from left to right), and addition and subtraction (from left to right). In this case, we only have multiplication and division.

First, we perform the multiplication: 7 * 3 = 21. Then, we divide the result by 13: 21 / 13 ≈ 1.6154 (rounded to four decimal places).

Therefore, the value of the expression 7 * 3 / 13 is approximately 1.6154.

2. To find the value of the expression 1619 * 2 / 5 + 2, we again follow the order of operations.

First, we perform the multiplication: 1619 * 2 = 3238. Then, we divide the result by 5: 3238 / 5 = 647.6. Finally, we add 2 to the division result: 647.6 + 2 = 649.6.

Therefore, the value of the expression 1619 * 2 / 5 + 2 is 649.6.

3. To calculate the expression 5 * 2 / 7 * 3 / 5, we apply the order of operations.

First, we perform the multiplication: 5 * 2 = 10. Then, we divide the result by 7: 10 / 7 ≈ 1.4286 (rounded to four decimal places). Next, we multiply the previous result by 3: 1.4286 * 3 ≈ 4.2857 (rounded to four decimal places). Finally, we divide the latest result by 5: 4.2857 / 5 ≈ 0.8571 (rounded to