Question

write arithmatic sequence with sum of eight terms 240 and common diffrenence 10​

Answer 1

Answer:

Explanation:

s = 240

d = 10

n = 8

240 = 4(2a + 70)

240/4 = 2a + 70

60 = 2a + 70

2a = -10

a = -5

So the AP is -5, 5, 15, 25, ......

Pls mark as brainliest

Answer 2

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Explanation:

To find the common difference d, use the formula a1+4d=a5.

For us, a1 is 10 and a5 is 38.

10+4d=38

Now we can solve for d.

4d=28

d=7

Add the common difference to the first term to get the second term.

a2=a1+d=10+7=17