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34kurt
3 years ago
14

Which equations support the fact that rational numbers are closed under addition?

Mathematics
1 answer:
PtichkaEL [24]3 years ago
3 0

i think the answer is the second choice √9+√9=2√9

<em>Hoped this helped!</em>

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What is the sum of 2/11’ 2/7’ and 1/11’?
pav-90 [236]
Solution

To solve this addition of fractions we are gonna apply the fraction rule which is;

a/c + b/c = (a + b)/c

2/11 + 1/11 = (2 + 1)/11


= (2 + 1)/11 + 2/7

Now add the numerators 2 + 1

= (2 + 1)/11 + 2/7

= 3/11 + 2/7

Now we find the least common multiple

The least common multiple of 11 and 7 is 77.

But before that we cross multiply the numerators.

3 * 7 = 21
2 * 11 = 22

Now the ajustes fraction is;

21/77 + 22/77


Apply the fraction rule which is;

a/c + b/c = (a + b)/c

= (21 + 22)/77

Now we add the numerators.

43/77

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3 years ago
Seven less than a number, divided by five, is -2
Anna35 [415]
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x- 7 = -10
x = -3
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7 0
3 years ago
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You have $25,000 to invest. You can find an account (Acount A) that guarantees $925 per year. You also found a simple interest a
Sveta_85 [38]
Account A
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=3,500

8 0
3 years ago
Which of the following transformations has the same result as a rotation of 90 degrees clockwise?
krek1111 [17]
The best and most correct answer among the choices provided by your question is the second choice or letter B.

Reflection of a horizontal line <span>has the same result as a rotation of 90 degrees clockwise.</span>

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
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3 years ago
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Answer

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2 years ago
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