The speed of light is 3.0*10^8 m/s. red light has a wavelength of 7 *10^-7 m. what is its frequency?

The mean of a set of data is -3.82 and its standard deviation is 2.31. find the z score for a value of 3.99.

Which point on the x-axis lies on the line that passes through point c and is parallel to lino ab?

Graph the line that represents a proportional relationship between d and t with the property that an increase of 33 units in t corresponds to an increase of 44 units in d. what is the unit rate of change of dd with respect to t? (that is, a change of 11 unit in t will correspond to a change of how many units in d? )