Which equations are balanced? Check all that apply. Mg3N2 H2O → 3MgO 2NH3 C3H8 5O2 → 4H2O 3CO2 Zn 2HCl → ZnCl2 H2 3Ca(OH)2 2H3PO4 → Ca3(PO4)2 6H2O 3H2SO4 2Fe → Fe2(SO4)3 H2 4Al 3O2 → 2Al2O3.

Find an equation in standard form of the parabola that passes through (-2, 9), (-4, 5), and (1, 0)

Find the number if 3.7% of it is 37% of 37.

Alex is the head photographer for the yearbook and the newspaper. she has a large staff of assistant photographers because they need to take pictures at all of the school events. she knows that some of her photographers have better cameras and can take action shots at sporting events, and that some of them are good at taking candid pictures in the hallways. she sets firm deadlines so she has enough time to look through all of the shots and choose the best ones. she gives her photographers constructive feedback to them improve their pictures. respectful enforcer warlord doormat peacemaker