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Write the algebraic expression described. Simplify if possible.
-A 21-centimeter piece of rope is cut into two pieces. If one piece is z centimeters long, express the other length as an algebraic expression in z.
Q18: <span class="ql-formula" data-value="- 12 z ^ {
Q126: <span class="ql-formula" data-value="( 7,1 )"><span class="katex"><span class="katex-mathml"><math
Q134: <span class="ql-formula" data-value="(-\infty,-5]"><span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mo stretchy="false">(</mo><mo>−</mo><mi
Q158: <span class="ql-formula" data-value="x \geq - 3"><span class="katex"><span
Q164: Find the sum of the first 50
Q202: Sales at a local ice cream shop
Q221: -6k + 4 + 7k = 12
Q248: <span class="ql-formula" data-value="- \frac { 1 }
Q296: 4(x + 5) = (4x + 20)<br>A)
Q306: <span class="ql-formula" data-value="\{ ( - 6,2 )