Question

The 4th term from the end of AP -11,-8,-5,....49 is __.​

Answer 1

Answer:

the answer of the fourth term from the end is 40

Answer 2

Answer:

${\large{\sf{\underline{Given}}}}$

$\: \: \: \: \: \: \: \: { \sf{❍ \: -11,-8,-5,...49 \: are \: in \:AP }}$

${\large{\sf{\underline{To \: Find}}}}$

$\: \: \: \: \: \: \: \: { \sf{❍ \: Find \: 4th \: Term \: of \: AP }}$

${\large{\sf{\underline{Solution}}}}$

• By Using an formula, By first term and common difference We can get our answer. let's start our solution

${\underline{ \sf{★ \: Formula\: used,}}}$

• ${ \boxed{ \boxed{ \sf{ a_{n} = a + (n - 1)d}}}}$

${\underline{ \sf{★ \: From \: Question,}}}$

• a = -11

• d = -8 - (-11) = 3

• n = 4

${\underline{ \sf{★ \: By\: Solving,}}}$

${\dashrightarrow{\sf{ a_{4} = - 11 + (4 - 1)3}}} \\ \\ \\ {\dashrightarrow{\sf{ a_{4} = - 11 + (3)3}}} \\ \\ \\ {\dashrightarrow{\sf{ a_{4} = - 11 + 9}}} \\ \\ \\ {\dashrightarrow{\sf{ a_{4} = 3}}} \\ \\ \\ \: \: \: \: \: \: \: \: \: \: { \boxed{ \boxed {\therefore{ \sf{4th \: Tèrm \: Of \: AP\: i s \: \pink{3} }}}}}$