Question

Can someone help me with this question pls

Answer 1

D

Explanation:

The sum to n terms of an arithmetic sequence is

`S_(n)` =
`(n)/(2)` [ 2a₁ + (n - 1)d ]

where a₁ is the first term and d the common difference

Here a₁ = - 94 and d = a₂ - a₁ = - 112 - (- 94) = - 112 + 94 = - 18 , then

S₁₀ =
`(10)/(2)` [ (2 × - 94) + (9 × - 18) ]

= 5(- 188 - 162)

= 5 × - 350

= - 1750