Navin gave her brother 1/5 of Arianna money and her sister 5/8 of the remainder. Navin remained eith $12.00. a) Calculate how much money he had at first? b) Calculate how much money his sister received? c)Calculate how much his brother received?​

Which of these tools or constructions is used to inscribe a hexagon inside a circle?

Solve the equation for b: a= (1/2)(b)(h)

Awavelength of 610 nm was found to be the most intense wavelength emitted by copper. answer the following questions about this wavelength of light. a) what is this wavelength in cm? b) what is the frequency that corresponds to this wavelength? c) what is the energy of light of this wavelength? d) what is the wavenumber corresponding to this wavelength?