Question

which term of A.P 12, 7, 2, -3........ is -98​

Answer 1

Answer:

➡AP : 12, 7 , 2 , - 3 , ........

▶Common difference (d)= 7-12 = -5

which term of the AP is (−98)

Let an =−98

Then,

$\bold{\</em></strong><strong><em>s</em></strong><strong><em>m</em></strong><strong><em>a</em></strong><strong><em>l</em></strong><strong><em>l</em></strong><strong><em>{\fbox{\color{blue} {</em></strong><strong><em>an</em></strong><strong><em> </em></strong><strong><em>=</em></strong><strong><em> </em></strong><strong><em>a</em></strong><strong><em>+</em></strong><strong><em>(</em></strong><strong><em>n-1</em></strong><strong><em>)</em></strong><strong><em>d</em></strong><strong><em>}}}}$

⟹−98=12+(n−1)×(−5)

⟹−98=12−5n+5

⟹−5n=−98−17

⟹n= −115/-5

⟹n=23✔

So ( - 98) is the 23rd term of the AP.

Step-by-step explanation:

HOPE IT HELP YOU

Answer 2

Answer:

hey mate!

here is ur answer

a = 12

d = 7-12=-5

an = -98

an =a+(n-1) d

-98=12+(n-1) (-5)

-98=12-5n+5

-98=17-5n

5n= 17+98

n = 115/5

n = 23

So the 23rd term of the given A. P. is -98.

hope it helps

mark as brainliest❤❤

#shruti