imgabymartinez
imgabymartinez imgabymartinez
  • 20-12-2017
  • Mathematics
contestada

HELP!
Find the 40th term of the arithmetic sequence.
–1, –5, –9, –13, –17, ...
−157
−159
−160
−161

Respuesta :

Pandagirl12345
Pandagirl12345 Pandagirl12345
  • 22-12-2017
A(n)=a+(n-1)d
A(40)= -1+(40-1)-4
A(40)= -1+39(-4)
A(40)= -1+(-156)
A(40)= -157
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