Question

1.Выполните действия, записав ответ в виде десятичной дроби.24:(1,05:0,07)=?; 3,4(9/16-5/24)=?...срочно!!!!!!! 6 класс ИТОГОВАЯ.

Answer 1

24:(3/2 * 10/7)= 24 * 7/15= 168/15= 11,2
3,4(9/16-5/24)=17/5(54/96 - 20/96)= 17/5 * 17/48= 289\240 ≈ 1,2

Answer 2

24:(1,05:0,07)=?

To solve this expression, we need to follow the order of operations, which is often remembered using the acronym PEMDAS (Parentheses, Exponents, Multiplication and Division from left to right, and Addition and Subtraction from left to right).

Let's break down the expression step by step:

1. First, let's simplify the expression inside the parentheses: 1,05:0,07. This is equivalent to dividing 1.05 by 0.07.

1,05:0,07 = 15

2. Now, let's substitute the simplified expression back into the original expression:

24:15 = 1.6

Therefore, the result of 24:(1,05:0,07) is 1.6.

3,4(9/16-5/24)=?

Again, let's break down the expression step by step:

1. First, let's simplify the expression inside the parentheses: 9/16 - 5/24.

To subtract fractions, we need a common denominator. The least common multiple of 16 and 24 is 48. Let's convert the fractions:

- 9/16 = 27/48 - 5/24 = 10/48

Now, we can subtract the fractions:

27/48 - 10/48 = 17/48

2. Now, let's substitute the simplified expression back into the original expression:

3.4 * (17/48) = 1.2

Therefore, the result of 3,4(9/16-5/24) is 1.2.

I hope this helps! Let me know if you have any further questions.