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What difference does the number of blades on a countersink drill bit make? A photon has a wavelength of 609 nm. Calculate the energy of the photon in joules. Enter your answer in scientific notation.? Can albino be created? Was the earliest farming culture developed in China? Put the following equations into an augmented matrices form:
5x + 8y = 15
2x â€“ 4y = 5?