P is directly proportional to u.
2 answers:
Answer:
Step-by-step explanation:
- A direct proportion means the ratio of p:u is a constant number
- This constant number is denoted by k
- an example of this is, say for every 1 chicken you buy there are 2 legs which is ratio 1:2 which is
- so if you add more chickens, you add more legs, 2 chickens means 4 legs, 8 chickens means 16 legs, which is
so the constant number is 0.5, so this a direct proportion
- The two values grow at the same rate
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Apply division by 10 when one tenth of a number is required and apply multiplication by 10 when 10 times of a number is required.
<u>Solution:</u>
Need to determine what operation is required to get one-tenth of a number and 10 times of a number
To get one tenth of a number, divide the number by 10.
For example to get one – tenth of 100, divide it by 10, we get 10 as a result.
To get ten times of a number, multiply the number by 10
For example 10 times of 10 = 10 x 10 = 100
Hence apply division by 10 when one tenth of a number is required and apply multiplication by 10 when 10 times of a number is required.