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Ede4ka [16]
2 years ago
15

(3n³ - 5n + n²) - (-8n² + 3n³) please shawty please

Mathematics
2 answers:
elixir [45]2 years ago
8 0

Answer:

9n^2 - 5n

Step-by-step explanation:

(3n^3 - 5n + n^2) - (-8n^2 + 3n^3)

Lets open the brackets. Signs of all the terms in the bracket next to the minus sign will change.

=> 3n^3 - 5n + n^2 + 8n^2 - 3n^3

Now lets add/substract all the like terms with each other.

=> 3n^3  - 3n^3  + n^2 + 8n^2 - 5n

=> 9n^2 - 5n \: \: or \:\: n(9n - 5)

satela [25.4K]2 years ago
3 0

Answer:

Step-by-step explanation:

3n^3-5n+n^2+8n^2-3n^3\\ \\ 9n^2-5n\\ \\ or\ n(9n-5)

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What value of y makes this equation true <br><br> 14•y =126
Veseljchak [2.6K]

Answer:

y = 9

Step-by-step explanation:

to solve this equation, you first have to divide:

14 * y = 126

/14         /14

y = 9

and there is the answer. If you need to prove that y = 9, just input it into the equation.

14 * 9 = 126

126 = 126

4 0
3 years ago
Your plan was to be on the road by 9 A.M. but you did not leave the garage until 10 A.M. You then drove with the cruise control
Wittaler [7]

Answer:

The average speed over the time interval from 9 A.M. to noon was of 33.33 mph.

Step-by-step explanation:

The average speed is given by the following equation:

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You traveled at 50mph during 2 hours. So how long you traveled?

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d = 50*2

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The average speed over the time interval from 9 A.M. to noon was of 33.33 mph.

8 0
3 years ago
A survey asks 48 randomly chosen students if they plan to buy a school newspaper this week. Of the 48 surveyed,32 plant to buy a
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2. Jacob deposited $6,000 into an account that offers 4.5% interest compounded annually.
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Answer: a

Step-by-step explanation:

3 0
3 years ago
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