Question

1) 3,8 * 0,6+0,3=???? 2)7,17 * 0,1-0,5=??? 3)7 2/3 : (1 4/5 - 7/9) - 2 * 1 1/4=???

Answer 1

Решение:

1)2,58

2)0,217

3)43,03333333…

Answer 2

Пошаговое объяснение:

1)Сначала умножение

3.8*0.6=2.28

Потом приплюсовывания

2.28+0.3=2.58

Ответ 2.58

2)Сначала умножение

7.17*0.1=0.717

Потом минусование

0.717-0.50=0.217

Ответ 0.217

Проверь 3 задания.Правильно ты его написал(а).Что  за пробелы между 7 и 2, 1 и 4

Напиши как правильно должно бить 3 задания и я его зделаю!

Answer 3

Let's solve each of the equations step by step:

1. 3.8 * 0.6 + 0.3 = ???

Step 1: Multiply 3.8 by 0.6 3.8 * 0.6 = 2.28

Step 2: Add 0.3 to the result 2.28 + 0.3 = 2.58

So, 3.8 * 0.6 + 0.3 = 2.58

2. 7.17 * 0.1 - 0.5 = ???

Step 1: Multiply 7.17 by 0.1 7.17 * 0.1 = 0.717

Step 2: Subtract 0.5 from the result 0.717 - 0.5 = 0.217

So, 7.17 * 0.1 - 0.5 = 0.217

3. 7 2/3 : (1 4/5 - 7/9) - 2 * 1 1/4 = ???

To solve this, we need to convert all mixed fractions into improper fractions and then perform the operations step by step.

Step 1: Convert mixed fractions into improper fractions. 7 2/3 = (7 * 3 + 2) / 3 = 23 / 3 1 4/5 = (1 * 5 + 4) / 5 = 9 / 5 1 1/4 = (1 * 4 + 1) / 4 = 5 / 4

Step 2: Simplify the expression inside the parentheses. (9/5 - 7/9) = (81/45 - 35/45) = 46/45

Step 3: Divide 23/3 by the result from Step 2 and then subtract 2 times 5/4 from it. (23/3) / (46/45) - 2 * (5/4)

Step 4: Perform division and multiplication. (23/3) * (45/46) - 2 * (5/4) = 0.97826087 - 2.5 = -1.52173913

Rounded to two decimal places, the final result is approximately -1.52.

So, 7 2/3 : (1 4/5 - 7/9) - 2 * 1 1/4 = -1.52