Questions Find the directional derivative of f(x, y,z) = 4x - yem at the point(-1,46)
in the direction of the vector (2, -3,6).​

Schrodinger and heisenberg developed an alternate theory about atomic nature that contradicted some of bohr's model of the atom. how do changes resulting from new technology and evidence affect the reputation of the atomic theory?

Answer asap need it by wednesday morning calculate the ph of 0.02m hcl best answer will be brainliest

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.