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mina [271]
2 years ago
14

What's

2} - {y}^{2} " alt=" {x}^{2} - {y}^{2} " align="absmiddle" class="latex-formula">

( where, x = 12 and y = 11 )​
Mathematics
1 answer:
klio [65]2 years ago
4 0

Answer:

here's your solution

=> we need to solve this ( x^2 -y^2)

=> it is given that x = 12 y= 11

=> now putting the value of these in question

=>. 12^2 - 11^2

=> 144 - 121

=. 23

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Explain why a change from 20 to 40 is a 100% increase, but a change from 40 to 20 is a 50% decrease. Increasing 20 to 40 is the
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School trip has 40 boys and 56 girls. What is the greatest number of groups that can be formed? How many boys and how many girls
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Answer:

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School trip has 40 boys and 56 girls.

We solve the above question using the Greatest Common Factor Method

We find the factors of 40 and 56

The factors of 40 are: 1, 2, 4, 5, 8, 10, 20, 40

The factors of 56 are: 1, 2, 4, 7, 8, 14, 28, 56

Then the greatest common factor is 8.

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The greatest number of groups that can be formed is 8 groups

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For boys.

The number of boys in each group is calculated as:

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For girls

For 56 boys.

The number of boys in each grouo is calculated as:

56 girls /8 groups = 7 girls per group

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