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Ksenya-84 [330]
3 years ago
15

Which set is not closed under addition

Mathematics
1 answer:
egoroff_w [7]3 years ago
3 0
I'm pretty sure it's C: Odd numbers
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3=7(4-2u)-6u can you help
sp2606 [1]

Answer:

5/4

Step-by-step explanation:

, open the bracket

3=28-14u-6u

Collect like terms

3-28=-14u-6u

-25 =-20u

Divide both side by -20

u=-25/-20. Minus sign will cancel each other and reduce to the lowest term

u=5/4

3 0
4 years ago
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Sam has 7 blue pens, 5 black pens, and 8 red pens. what is the ratio of red pens to all pens?
kati45 [8]

Step-by-step explanation:

\frac{8}{7 + 5 + 8}  =  \frac{8}{20}  =  \frac{2}{5}

5 0
1 year ago
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Comparing values.....The value of 4 in 3,492 is blank times the value of 4 in 704
Andreyy89
The 4 in 3492 is 400, while it's value in 704 is 4, therefore it is 100 times as big in 3492 than it is in 704.
7 0
3 years ago
5n+11n<br> I need your help
True [87]

Answer:

16n

Add the coefficients and leave the variables

4 0
3 years ago
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Ted is hiking up a trail. Currently, he is at an elevation of 2,300 feet and is gaining 400 feet of elevation per hour. Juanita
timurjin [86]

Answer:

2

Step-by-step explanation:

2,300 + 400h = 4,300 − 600h

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