Math, asked by srisaiagencies7059, 3 months ago

A13=37 d=3 find a=? ,s13=?

Answers

Answered by vanshgupta12345
0

Answer:

 \boxed {\blue{given =  > }}

³= 37, d= 3, a=?, ³=?

 {a}^{13 }  = 37 \\ a + 12d = 37 \\ a + 12(3) = 37 \:  \:  \: { \: given = 3} \\ a + 36 = 37 \\ a = 37 - 36 \\  \orange{a = 1}

Now:-

 {s}^{13}  =  \frac{n}{2} (a +  {a}^{n} ) \\  {s}^{13 }  =  \frac{13}{2} (1 + 37 )\\  {s}^{13}  =  \frac{13}{2} (38) \\  {s}^{13}  =  \frac{13}{2}  \times 38 \\  {s}^{13}  = 13 \times 17

{ \green{ {s}^{13}  = 221}}

 \mathfrak \red{plz \: mark \: me \: brainliest \: for \: m \gamma  \: full \: } \\  \mathfrak \purple{explanation}

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