Given that ABCD is a rhombus, Determine the length of each diagonal, AC, and BD if m∠ADE=20° and AD = 8cm. Please help and show me how you did it.

Li buys supplies so he can make and sell key chains. he begins to make a profit only after he sells 4 key chains. what point on the graph makes the most sense in this situation?

Solve for n? [tex]z = \frac{3}{4} mn[/tex]

How many solutions does the nonlinear system of equations graphed below have? a. one b. zero c. four d. two