Work cooperatively. Solve each equation or inequality. $\frac{4}{x}=\frac{6}{x^{2}}$

Work cooperatively. Write each inequality using interval notation. $\{b | b \leq-9 \text { or } b>1\}$

Work cooperatively. Solve each equation. Round to the nearest tenth if necessary. $2 x^{2}+3 x-1=0$

Work cooperatively. Solve each equation. Round to the nearest tenth if necessary. $x^{2}+5 x+6=0$

Work cooperatively. Write each inequality using interval notation. $\{m | m \geq 4 \text { or } m \leq-7\}$

Work cooperatively. Solve each equation. Round to the nearest hundredth. $x^{6}-15=5 x^{4}-x^{2}$

Work cooperatively. Solve each equation. Round to the nearest tenth if necessary. $5 x^{2}-7 x=-2$

Work cooperatively. Solve each equation. Round to the nearest tenth if necessary. $x^{2}+8 x+16=0$

Work cooperatively. Solve each equation. Round to the nearest tenth if necessary. $x^{2}-7 x+12=0$

Work cooperatively. Solve each equation. Round to the nearest hundredth. $x^{4}-15 x^{2}+x+65=0$

Work cooperatively. Solve each equation. Round to the nearest tenth if necessary. $x^{2}+5 x+6=12$

Un(a) amigo(a) te pidió sugerencias para ayudar en la comunidad. Haz mandatos con los siguientes verbos para recomendar actividades. BLANK (conseguir) la cooperación de una revista.

Work cooperatively. Use a graphing calculator to solve each system of inequalities.

$$\begin{array}{l}{y \geq-4 x} \\ {y \leq-5}\end{array}$$

$$180 ^ { \circ } < \alpha < 360 ^ { \circ }$$

and

$$\cos \alpha = \frac { 8 } { 17 }$$

. Find the following.

$$\sin \frac { \alpha } { 2 }$$