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kipiarov [429]
3 years ago
14

Which expression is equivalent to n(3+2n)? a)2n²+3n+5 b)5n+5 c)2n+8 d)11n

Mathematics
2 answers:
Colt1911 [192]3 years ago
8 0

Answer:

<h2>answer will be only 3n+2n² and no other........</h2>
denis23 [38]3 years ago
5 0

Answer:

None of the above.

Step-by-step explanation:

n(3 + 2n)

Apply distributive property...

3n + 2n²

There are no extra numbers

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Natasha_Volkova [10]

Answer:

0.225989

Step-by-step explanation:

3x+9+x-11=180

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0.225989

7 0
3 years ago
Read 2 more answers
Robert and Elaine ran around the high school track during gym class. robert ran 1/2 of the way around the track in 5/6 minute. L
jok3333 [9.3K]

<u>Answer</u>


Incorrect


<u>Explanation</u>

Unpack the problem:

Let the distance round the track to be X.

Speed is the ratio of distance to time.

Robert run a distance of (1/2)x

Elaine run a distance of (3/4)x


Make a plan:

Finding the speed of each.

Compare their speeds to determine who ran faster than who.


Solution:

Robert's speed =(1/2)x/(5/6)

=1/2×6/5x

= (3/5)x

= 0.6x

Elaine's speed = (3/4)x/(9/10)

= (3/4)×(10/9)x

= (5/6)x

= 0.83333x



<em>Elaine ran faster than Robert. </em>


<u>Look back and explain:</u>

0.83333x > 0.6x

Elaine's speed is higher than Robert's speed.

This shows that Elaine ran faster than Robert.

5 0
3 years ago
Evaluate the given algebraic expression for x = 7 and y = 3.
Ierofanga [76]

Answer:  = 2(7 + 3) ^2= 2 * 10^2= 200

5 0
2 years ago
John runs a computer software store. Yesterday he counted 127 people who walked by his store, 58 of whom came into the store. Of
Delicious77 [7]
The answer is 3/4. All you need to do is make proportion and simplify! Hope it helps! 
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2 years ago
Write as a mixed fraction: 22 / 3
lakkis [162]
7 1/3

I think this is it, i would like for u to get a second opinion.

4 0
3 years ago
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