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Nimfa-mama [501]
4 years ago
15

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

Mathematics
2 answers:
Zielflug [23.3K]4 years ago
7 0
I think this first answer choice is supposed to be "1/3+1/3=2/3" (If so then that's the correct answer) and the second one answer would be √9+√9=2<span>√9</span>
Talja [164]4 years ago
5 0
Do you mean
√9 + √9 = 2√9 


if so it is the answer
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QUESTION 21 ✓ Round 5 1/3 to the nearest whole number?<br>​
wariber [46]

Answer:

5

Step-by-step explanation:

1/3 is only 0.33 and 0.33 isnt higher than 0.50, so you cant round anything. 5 is the answer.

5 0
2 years ago
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Write the number for nine million seven hundred thousand
marin [14]

Answer:

9,700,000.

Explain:

9 goes in the 1,000,000th place, and 700 would be placed right behind the 9's comma. Therefore, 9,700,000

8 0
2 years ago
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Geometric mean. Find x, y, and z. Show work please.
Aleks [24]

Answer:

Step-by-step explanation:

i dont know the rest but the answer to x is 15 because the formula to that triangle is A^2+B^2=C^2

A=12

B=9

144(12^2) and 81 (9^2) add

225

find square root

15

z=15

4 0
3 years ago
10 &lt; 0.25 ( x + 1 ) &lt; 11
AURORKA [14]
10 <0.25 (x + 1) <11
 
We must solve two inequalities in this case.
 Inequality 1:
 
10 <0.25 (x + 1)
 10 / 0.25 <x + 1
 40 <x + 1
 40-1 <x
 39 <x
 Inequality 2:
 
0.25 (x + 1) <11
 (x + 1) <11 / 0.25
 (x + 1) <44
 x <44-1
 x <43
 The final result is:
 39 <x <43
 Answer:
 
39 <x <43
6 0
4 years ago
Please help me. I am having trouble
spin [16.1K]

Answer:

area = 41 units²

Step-by-step explanation:

area = (8 x 4) + (3 x 3) = 41 units²

5 0
3 years ago
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