- Ratio 21 inches to 3 feet as a fraction in simplest form??? helppp?

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Chloroplasts contain a pigment called that captures the energy in light? Cut a brick? How can you make negative though to be positive? Vector A has magnitude of 12.7 and is 165° counter-clockwise up from the x-axis. What are the x- and y-components of the vector? Is it safe to take 30ml of DayQuil and and hour and a half later take 800mg of ibuprofen?