Find the indicated quantity.
-$\mathrm { n }$, when $\mathrm { a } _ { 1 } = 309 , \mathrm { a } _ { \mathrm { n } } = 49$, and $\mathrm { d } = - 20$;
A) 13
B) 11
C) 12
D) 14

Question

Quizplus · Accepted Answer

The Answer of Find the indicated quantity.
-$\mathrm { n }$, when $\mathrm { a } _ { 1 } = 309 , \mathrm { a } _ { \mathrm { n } } = 49$, and $\mathrm { d } = - 20$;
A) 13
B) 11
C) 12
D) 14

Find the Indicated Quantity n\mathrm { n }n , When a1=309,an=49\mathrm { a } _ { 1 } = 309 , \mathrm { a } _ { \mathrm { n } } = 49a1​=309,an​=49

Find the Indicated Quantity $\mathrm { n }$ , When $\mathrm { a } _ { 1 } = 309 , \mathrm { a } _ { \mathrm { n } } = 49$