Question

if a equal -5 d is -2. find s6
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Answer 1

Answer:

- 60

Step-by-step explanation:

s6=n/2*(2a+(n-1)d)

 =3*(-10+(5*-2))

 =3(-10-10)

 =3*-20

 =-60

Answer 2

Answer:

-60

Step-by-step explanation:

s6=n/2*(2a+(n-1)d)

  =3*(-10+(5*-2))

  =3(-10-10)

  =3*-20

  =-60

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