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ziro4ka [17]
3 years ago
6

© Increase £14187.13 by 4.5% Give your answer rounded to 2 DP.

Mathematics
2 answers:
lesantik [10]3 years ago
8 0

Answer:

The new amount is £14825.55

Step-by-step explanation:

To increase the ammount given by 4.5 % we can make a rule of three in a way that 14187.13 is related to 100% in the same proportion that "x" is related by 4.5%, then we sum the original value by "x". We have:

£14187.13 -> 100%

£x -> 4.5%

14187.13/x = 100/4.5

100*x = 14187.13*4.5

x = 14,187.13*4.5/100

x = 63,842.085/100

x = 638.421

The new amount is given by:

new amount = 14,187.13 + 638.421 = £14,825.55

Pavlova-9 [17]3 years ago
4 0

Answer:

The new value is $14,825.55

Step-by-step explanation:

In this question, we are intending to increase a certain value by a certain percentage.

To do this, we find the direct percentage on that value and add to that value.

Finding the percentage, we have;

4.5% of 14187.13 = 4.5/100 * 14187.13 = 638.42

we now proceed to add this vale to the value we have found the percentage of

That would be 638.42 + 14187.13 = £14,825.55

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A college-entrance exam is designed so that scores are normally distributed with a mean of 500 and a standard deviation of 100.
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Answer: 1.25

Step-by-step explanation:

Given: A college-entrance exam is designed so that scores are normally distributed with a mean(\mu) = 500 and a standard deviation(\sigma) =  100.

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