what is the 20th term if the first term is 4 and the common difference is -1/3?
+26396 what is the 20th term if the first term is 4 and the common difference is -1/3
\small{ \text{d} = -\dfrac13 \qquad a_1 = 4 }\\\\ \small{ \text{arithmetical sequence: } a_n = a_1 + (n-1)\cdot d }\\\\ \begin{array}{rclclcr} \small{a_{20} &=& 4 + (20-1)\cdot \left( -\dfrac13 \right)\\\\ \small{a_{20} &=& 4 + 19\cdot \left(-\dfrac13 \right)\\\\ \small{a_{20} &=& 4 - \dfrac{19}{3} \\\\ \small{a_{20} &=& -2.\overline{3} \\\\ \end{array}
+26396 what is the 20th term if the first term is 4 and the common difference is -1/3
\small{ \text{d} = -\dfrac13 \qquad a_1 = 4 }\\\\ \small{ \text{arithmetical sequence: } a_n = a_1 + (n-1)\cdot d }\\\\ \begin{array}{rclclcr} \small{a_{20} &=& 4 + (20-1)\cdot \left( -\dfrac13 \right)\\\\ \small{a_{20} &=& 4 + 19\cdot \left(-\dfrac13 \right)\\\\ \small{a_{20} &=& 4 - \dfrac{19}{3} \\\\ \small{a_{20} &=& -2.\overline{3} \\\\ \end{array}
