Question

PLEASE HELP URGENT I ALSO NEED EXPLANATIONS TO EVERY MATH PROBLEM

Answer 1

`\begin{gathered} 9)\text{ }\sqrt[3]{64}=\text{ 4} \\ \\ 10)x^2=16 \\ x=\sqrt[]{16} \\ x=\pm4 \\ \\ 11)\text{ }x^3=-8 \\ x=\sqrt[3]{-8} \\ x=-2 \\ \\ 12)6.79x10^5\text{ in standard form} \\ 6.79x10^5=679,000 \\ \\ 13)\text{ }0.0002in \\ 0.0002=2x10^(-4) \\ \\ 14)\text{ (}6.7x10^4\text{)}\cdot(9.1x10^6)=6.097x10^(11) \\ \\ 15)\text{ }(5.4x10^6)/(9x10^3)=600 \\ 5.4x10^6is6x10^2\text{ larger than }9x10^3\text{ } \\ 16)\text{ }(3.4x10^5)-(2.1x10^4)=3.19x10^5 \\ \\ 17)\text{ }12,000+\text{ }(3.4x10^5)=3.52x10^5 \\ \\ 20)\text{ }\sqrt[]{50}\text{ is a irrational number} \\ \\ 21)\text{ 23 is a rational number} \\ \\ 22)0.\bar{5}\text{ in frac}tion\text{ form is }(5)/(9) \\ \\ 23)\text{ }\sqrt[]{40}\approx6.32\text{ so }the\text{ point A is approx }\sqrt[]{40} \\ 24)\text{ }2\pi\approx6.28 \\ \sqrt[]{38}\approx6.16 \\ The\text{ line }C\text{ represents }better\text{ the numbers }2\pi\text{ and }\sqrt[]{38} \end{gathered}`