One morning Annie stood straight in her yard and cast a 3-foot shadow on the level ground. Is the top of Annie's head is 5 feet from the tip of her Shadow ,how tall is Annie?

Its due ! write an equation in which the quadratic expression 2x^2-2x 12 equals 0. show the expression in factored form and explain what your solutions mean for the equation. show your work.

What is the equation of the graph below? y=sec(x)-4

The ratio pv to nrt is plotted against pressure for ch4 at 0°c and 200°c. why does the curve for 0°c drop below the horizontal line for an ideal gas whereas the curve for 200°c does not?