Examlex
Find the sum of the first n terms of the following arithmetic sequence.
-
Q94: A card is drawn from a
Q121: <span class="ql-formula" data-value="\text { Plot the point
Q245: A driver wants to gauge the
Q261: <span class="ql-formula" data-value="\sum _ { i =
Q277: <span class="ql-formula" data-value="\left( \begin{array} { l }
Q342: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB7514/.jpg" alt="
Q349: <span class="ql-formula" data-value="y=|x+5|+3"><span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>y</mi><mo>=</mo><mi mathvariant="normal">∣</mi><mi>x</mi><mo>+</mo><mn>5</mn><mi
Q396: <span class="ql-formula" data-value="y+1=0"><span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>y</mi><mo>+</mo><mn>1</mn><mo>=</mo><mn>0</mn></mrow><annotation encoding="application/x-tex">y+1=0</annotation></semantics></math></span><span
Q503: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB7514/.jpg" alt="
Q522: <span class="ql-formula" data-value="y = 4 x ^