What is most likely the reason variable expenses should be planned after fixed expenses? Fixed expenses are deducted from gross income, and variable expenses come from net income.
Variable expenses are a necessary part of fixed expenses but can only be calculated after fixed expenses.
Variable expenses are almost always higher than fixed expenses and need a greater budget.
Fixed expenses are required and constant, but variable expenses are more flexible.

the answer is b: 1.4 km/hr

the  frequency of a wave represents  the number of wavelengths that pass a specific point per second. the unit for  frequency  is hertz (hz).

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the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.