Discover Questions

Find the maximum value of the function f(f) = 5 - x - x^2 and value of x it occurs.? Which has the highest boiling point?And Why?
A-H20
B-CO2
C-CO
D-CH4
E-N2? Find the volume when the area bounded by 5x+3y+24=0, y=12, y=2 and x+4=0 is revolved completely about x=–1.? Aluminum has a face-centered cubic cell. If the atomic radius of aluminum 125 pm, what is the edge length of the unit cell? 90 degrees and 270 degrees ... which represents a positive displacement of a wave. I know its 270 but i need an explanation please.?