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Nady [450]
4 years ago
15

3n-(2+n) what value of n makes this expression equal to 6. 5,6,4 or 3

Mathematics
2 answers:
melomori [17]4 years ago
5 0

Answer:

4

Step-by-step explanation:

3n-(2+n)

3(4)-(2+4)

12-(6)

12-6

6

Art [367]4 years ago
5 0

Answer:

4

Step-by-step explanation:

3n-(2+n)

You can just put in the given numbers to try out the expression.

Let's do 4

3(4)-(2+4)

12-6

=6

Hope this helps :)

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3 years ago
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3 years ago
Which of the following expressions correctly uses the properties of summations to represent
madam [21]

Answer:

Option C is correct.

7 \cdot \sum_{i=1}^{18} i^2 + 9 \cdot 18

Step-by-step explanation:

Given the expression:  \sum_{i=1}^{18} (7i^2+9)

Using properties of summation:

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Using properties of summation in the given expression we have;

\sum_{i=1}^{18} (7i^2+9)

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Therefore, the following given expression uses the properties of summation to represents is, 7 \cdot \sum_{i=1}^{18} i^2 + 9 \cdot 18


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