Q83: Write the number in scientific notation.<br>-0.000000855016<br>A)
Q84: Tell whether or not the number
Q85: Perform the division.<br>- <span class="ql-formula" data-value="\frac{-8
Q86: Perform the division.<br>- <span class="ql-formula" data-value="\frac{x^{4}+7
Q87: Multiply.<br>- <span class="ql-formula" data-value="5(4 \mathrm{x})"><span class="katex"><span
Q89: Multiply.<br>- <span class="ql-formula" data-value="\left(-14 x^{3}\right)(-1)"><span class="katex"><span
Q90: Divide and simplify.<br>- <span class="ql-formula" data-value="\frac{t^{-2}}{t^{-7}}"><span
Q91: Collect like terms and then arrange
Q92: Multiply.<br>- <span class="ql-formula" data-value="-3 x^{8}\left(-10 x^{9}+9
Q93: Multiply.<br>- <span class="ql-formula" data-value="\left(x^{2}+5\right)^{2}"><span class="katex"><span class="katex-mathml"><math