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Gwar [14]
3 years ago
15

The difference of the squares of twenty and thirteen

Mathematics
1 answer:
sineoko [7]3 years ago
5 0
20 squared = 400
13 squared = 169
 400
-139

(231)
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How do you know that the sum of 7-1g and 7-2 is rational?
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The sum of 7-1 and 7-2 will be a rational number because sum of rational numbers is a rational numbers.

A rational number is a number which can be written in p/q form where q≠0.

We know that when two rational numbers is added then the sum is also a rational number. And when two rational numbers are subtracted then the difference is also a rational number.

So in the given question, lets study the term differently that is,

i) 7 - 1 is a rational number because their difference is equal to 6 and it can be written in p/q form which is 6/1.

ii) 7 – 2 is also a rational number as their difference will be 5 which is a rational and can be written in p/q form which is 5/1.

So when these two rational numbers are added their sum will also be a rational number which is 11.

Learn more about rational numbers here : brainly.com/question/12088221

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1 year ago
A grocery store recently sold 10 cartons of yogurt, of which 5 were raspberry. What is the experimental probability that the nex
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2 years ago
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Answer:

Step-by-step explanation:

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What does it mean when two functions are inverse of each other?
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They are the opposite of each other.  Like if one function has the point (1,3) the inverse function with have the point (3,1)
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If you multiply $60 by 0.15 you'll get 9 which is the taxes of the meal. Since he leaves the same percentage of tip, now we add 9+9 and get $18..
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