Why are melting points of pure solids reported without including the pressure.

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days

The roots of the function f(x) = x2 – 2x – 3 are shown. what is the missing number?

The measure of angle 0 is 600 degrees