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Strike441 [17]
2 years ago
12

Fine the sum of the first 8 terms of the arithmetic series 2+7+12+...

Mathematics
1 answer:
ss7ja [257]2 years ago
4 0

Answer:

156

Step-by-step explanation:

s8 = n/2 [2t + (n-1)(d)]

= 8/2 [2(2) + (8-1)(5)]

= 4 [4 + (7)(5)]

= 4 (4 + 35)

= 4 (39)

= 156

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Y=x+3 <br> 2x+y=-6<br> Find the solution :
Charra [1.4K]

Answer:

Your solution is (-3,0)

Step-by-step explanation:

Hi,

We know what Y is, so we can plug it into the second equation.

2x + y = -6

2x + (x + 3) = -6

Now, add the like terms...

3x + 3 = -6

3x = -9

x = -3

Now, plug x back in to find y.

y = x + 3

y = (-3) + 3

y = 0

Your solution is (-3,0)

Hope this helps :)

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3 years ago
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This is how I understood the question

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