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USPshnik [31]
3 years ago
6

If n is an integer,what is the sum of the next three consecutive even integers greater than 2n?​

Mathematics
1 answer:
irina1246 [14]3 years ago
3 0

Answer:

6n + 12

Step-by-step explanation:

Given an integer n, the 3 consecutive even integers greater than 2n are 2n+2, 2n+4 and 2n+6

Taking their sum;

Sum = (2n+2)+(2n+4)+(2n+6)

Sum = 2n+2n+2n+2+4+6

Sum = 6n + 12

Hence the sum of the 3 consecutive even integers greater than 2n is 6n+12

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GuDViN [60]

Answer:

The cost of 1 doll   =  $ 7.5

and The  Cost of 1 toy train =   $ 5

Step-by-step explanation:

Let the price of 1 doll  = $ x

The price of  1 toy train  = $ y

Now, according to the question:

6 x + 2 y  = $ 55

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Solving the given system of equation,

From (1), we get

x= \frac{55 - 2y}{6}

4 ({\frac{55 - 2y}{6}} )  + 7y = 65

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or, 17 y = 85

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Hence, the cost of 1 doll  = x = $ 7.5

and the Cost of 1 toy train =  y = $ 5

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3 years ago
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Alex73 [517]

Answer:

4. A

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Step-by-step explanation:

4. I'll solve question four first:

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Answer:

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Step-by-step explanation:

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HACTEHA [7]
Hello,

x²+y²-10x+6y+18=0
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