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vichka [17]
2 years ago
13

Can someone please help

Mathematics
1 answer:
Alika [10]2 years ago
3 0

Answer:

option (B).

Step-by-step explanation:

it's really simple....

just replace the (n) near the 3 with 1,2,3,4,5 and 6 and then solve the maths and when you're done , you add the answers all up.

sooo...

3(1)-2 = 1

3(2)-2 = 4

3(3)-2 = 7

3(4)-2 = 10

3(5)-2 = 13

3(6)-2 = 16

now we add them all up...

1+4+7+10+13+16 = <u>5</u><u>1</u><u>.</u>

Hope this helps.

Good luck.

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Add equation 1 to equation 3:
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Swap equation 2 with equation 3:
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Subtract 6 × (equation 3) from equation 2:
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{0 x+y+0 z = 1 | (equation 2)
{0 x+0 y+z = 0 | (equation 3)

Subtract 2 × (equation 2) from equation 1:
{-(2 x) + 0 y+3 z = -2 | (equation 1)
{0 x+y+0 z = 1 | (equation 2)
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Subtract 3 × (equation 3) from equation 1:
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{0 x+y+0 z = 1 | (equation 2)
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Divide equation 1 by -2:
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