How do you work out 2/5 of 10

2 answers:

7 0

A simple way is to work out 1/5 first. To work out 1/5 of something you divide it by 5. So 10 divided by 5 is 2. So this means 1/5 is 2. However we want 2/5 not 1/5. To get 2/5 we just double 1/5. 1/5*2 is 4. This means 2/5 is the same as 4. Your answer is 4.

lesya [120]3 years ago

4 0

This is an example of multiplication of fractions.
2/5 of 10 means (2/5)*10. It can also be written as (2/5)*(10/1)In order to multiply fractions, just multiply the numerators which are 2 and 10 and the product is 20. And multiply also the denominators which are 5 and 1 and the product is 5. The result would be written as 20/5. The final answer should be written in simplified form which is 4.
Solution: (2/5)*10 = (2/5)*(10/1) = 20/5 = 4

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Answer:

Part (A): The required inequality is T < 35 or t >40.

Part (B): The correct option is C) Only x=7.

Part (C) |x+1|+5=2 has no solution; |4x+12|=0 has one solution; |3x|=9 has two solution.

Step-by-step explanation:

Consider the provided information.

Part (A)

Storing milk at temperatures colder than 35°F can affect its quality of taste. However, storing milk at temperatures warmer than 40°F is an unsafe food practice.

The union is written as A∪B or “A or B”.

The intersection of two sets is written as A∩B or “A and B”

We need to determine the inequalities represent the union of these improper storage.

That means we will use A∪B or “A or B”.

The improper storage temperatures is when temperature is less than 35°F or greater than 40°F.

Hence, the required inequality is T < 35 or t >40.

Part (B) 15| x-7|+4=10|x-7|+4

Solve the inequality as shown below:

Subtract 4 from both sides.

$15| x-7|+4-4=10|x-7|+4-4$