Q28: Perform the indicated operation and, if
Q29: Convert to percent notation.<br>-0.00987<br>A) <span
Q30: Solve the problem.<br>-Robert has built a mechanical
Q31: Simplify.<br>- <span class="ql-formula" data-value="\frac{5 x y}{6
Q32: Round to the requested decimal place.<br>-0.000139 (nearest
Q34: Find an equivalent expression without parentheses.<br>--(7
Q35: Simplify.<br>- <span class="ql-formula" data-value="(8+3)[7+(8+7)]"><span class="katex"><span class="katex-mathml"><math
Q36: Subtract.<br>- <span class="ql-formula" data-value="\frac{2}{7}-\frac{1}{21}"><span class="katex"><span class="katex-mathml"><math
Q37: Convert to percent notation.<br>-0.409<br>A) <span
Q38: Collect like terms.<br>- <span class="ql-formula" data-value="-9